CA2016489A1 - Process and an apparatus for pasteurizing and precooking uncooked pizza bases - Google Patents
Process and an apparatus for pasteurizing and precooking uncooked pizza basesInfo
- Publication number
- CA2016489A1 CA2016489A1 CA002016489A CA2016489A CA2016489A1 CA 2016489 A1 CA2016489 A1 CA 2016489A1 CA 002016489 A CA002016489 A CA 002016489A CA 2016489 A CA2016489 A CA 2016489A CA 2016489 A1 CA2016489 A1 CA 2016489A1
- Authority
- CA
- Canada
- Prior art keywords
- plate
- vitroceramic
- pizza
- precooking
- pasteurizing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 235000013550 pizza Nutrition 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 12
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 2
- 235000013980 iron oxide Nutrition 0.000 claims description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 abstract description 4
- 238000010411 cooking Methods 0.000 description 5
- 238000011049 filling Methods 0.000 description 5
- 238000009928 pasteurization Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 235000015067 sauces Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000006128 CERAN Substances 0.000 description 1
- 101100506443 Danio rerio helt gene Proteins 0.000 description 1
- 101100506445 Mus musculus Helt gene Proteins 0.000 description 1
- 239000002196 Pyroceram Substances 0.000 description 1
- 230000009102 absorption Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000013410 fast food Nutrition 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/78—Arrangements for continuous movement of material
- H05B6/782—Arrangements for continuous movement of material wherein the material moved is food
-
- A—HUMAN NECESSITIES
- A21—BAKING; EDIBLE DOUGHS
- A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
- A21B1/00—Bakers' ovens
- A21B1/42—Bakers' ovens characterised by the baking surfaces moving during the baking
- A21B1/48—Bakers' ovens characterised by the baking surfaces moving during the baking with surfaces in the form of an endless band
-
- A—HUMAN NECESSITIES
- A21—BAKING; EDIBLE DOUGHS
- A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
- A21B2/00—Baking apparatus employing high-frequency or infrared heating
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/005—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
- A23L5/10—General methods of cooking foods, e.g. by roasting or frying
- A23L5/15—General methods of cooking foods, e.g. by roasting or frying using wave energy, irradiation, electrical means or magnetic fields, e.g. oven cooking or roasting using radiant dry heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S99/00—Foods and beverages: apparatus
- Y10S99/14—Induction heating
Abstract
Abstract A Process and an apparatus for pasteurizing and precook-ing uncooked pizza bases A vitroceramic plate is heated by microwaves to bring it to a temperature of 250 to 300°C, the plate is then re-moved from the microwave field and the pizza base is placed on the plate for about 2 to 3 minutes. The arrangement comprises a conveyor belt (1) with a plurality of vitro-ceramic plates (2) and with a zone in which it passes through a microwave tunnel (4) and a zone in which it passes through open air.
Fig.
Fig.
Description
This invention relates to a process for pasteurizing and precooking raw (or uncooked) pizza bases. The invention also relates to an arrangement fox carrying out this process.
To cook deep-fxozen piZzacs~ the consumer may be presented with two possibilities~ The first comprises filling a raw pizza base, freezing the pizza and cooking it before eating. The problem with non-precooked pizzas is that commercially available domestic ovens rarely permit correct, i.e. adequate, cooking of the piæzas because thev generally do not enable temperatures high enough for proper cooking of the pizza dough to be reached. On the other hand, because the pizzas are only cooked once, there is no risk of the dough drying out.
To avoid the above-mentioned problem of inadequate cooking, the raw dough i5 generally precooked at the factory in conventional ovens applying convection and contact heat which has the disadvantage of drying par-ticularly the edges of the dough not covered by filling or sauce. This phenomenon is further aggravated when the pizza is cooked for the second time during final prepara-tion in a domestic oven.
The object of the present invention is partly to precook a pizza base with a temperature gradient in the dough which enables a product of satisfactory quality to be obtained during final cooking in a domestic oven while, at the same time, avoiding excessive evaporation of water from the dough which would result in drying out of the edges not covered by the filling or the sauce. In addition, the present invention allows satisfactory pasteurization for distribution of the pizza by refrigerated transport.
The present invantion relates to a process for pas-teurizing and precooking raw pizza bases in which a vitro-ceramic plate is heated by microwaves to bring it to a temperature of 250 to 300C, the plate is then removed from the microwave field and the pizza base is placed on the ~J ~ 1 f~
plate for about 2 to 3 minutes.
According to the invention, the pizza base is precook-ed solely by underneath contact in a cold atmosphere.
The vitroceramic plate used must have a high absorp-tion capacity for microwaves, i.e. it must enable thedesired temperature to be reached in a short time. In addition, the vitroceramic plate used must have a high energy transfer coefficient. Plates of the CERAN type (Schott) or the PYROCERAM type (Dow Corning) are preferably used. These plates contain iron oxides and/or carbon fibers. They may of course contain other metal oxides which absorb microwaves.
If the pizza bases are left on the preheated vitro-ceramic plates for between 2 and 3 minutes, the surface directly in contact with the plate turns brown and is precooked, assuming a crispy character. However, the second advantage of this residence time on the plate is that it enables the pizza base to be pasteurized. This is because, after the 2 or 3 minutes, the dough in direct contact with the plate reaches a temperature of approxi-mately 200~C while the upper surface of the pizza base is at a temperature of approximately 90C. This corresponds to a good pasteurization temperature. The effect of the pasteurization is to stop the activity of the yeast.
Experiments have shown that precooking in accordance with the invention enables the germ content to be reduced to an acceptable level for a pasteurized product.
Accordingly, several uses may be envisaged for the pizza base thus treated. Thus, it may be filled, frozen and packed, which gives a precooked product useable with a standard pack which may then be cooked by the consumer in a conventional or microwave oven. Alternatively, it may be used without a filling in so-called fast-food catering. It is also possible to fill the pizza base intended for sale as a refrigerated product. Since the pizza thus obtained ~d ~
is pasteurized, it will keep for a fortnight in a refriger-ator.
In one preferred em~odiment of the process according to the invention, the vitroceramic plate is heated to between 270 and 280C and, after removal of the plate from the microwave field, the pizza base is placed thereon for about 2.5 minutes.
The pizza dough is prepared in the conventional manner with flour, water and yeast.
The power output of the oven used to heat the vitro-ceramic plates is not critical, although an oven having a power output of 5 KWatts with several microwave generators is preferably used.
The invention also relates to an arrangement for carrying out the process, comprising a conveyor helt with a plurality of vitroceramic plates and with a zone in which it passes through a microwave tunnel and a zone in which it passes through open air. The microwave tunnel comprises between three and seven microwave generators each having an output of the order of 5 KWatts.
The conveyor belt circulates at a speed of 1 to 3 m/minute. A good precooking effect is obtained with a vitroceramic plate having a thickness of 4 to 10 mm and preferably of the order of 8 mm. By means of this arrange-ment, precooked pizza bases can be continuously prepared and are pasteurized without an oven.
It is thus possible to avoid the disadvantage attend-ing the conventional pasteurization of dough, namely its excessive expansion when it is in a hot oven.
The invention is described in more detail in the following with reference to the accompanying drawing which diagrammatically illustrates the arrangement according to the invention. The conveyor belt (1) comprises vitroceram-ic plates (2) and circulates in a closed loop in the 35 arrowed direction around reversing rollers (3). The microwave tunnel (4) ~omprises six microwave generators (5). At the exit of the microwave tunnel there is an infrared thermometer (6~.
The arrangement operates as follows:
The microwave generators are switched on together with the conveyor belt which, initially, is empty. When the thermometer (6) detects a temperature of the order of 270C-280 C on the vitroceramic plates, the conveyor belt (7) begins to circulate and brings the raw pizza bases (8) onto the vitroceramic plates. Precooking takes place in the section between the two successive reversing rollers (3). At the end of that section, a carousel (9) in the form of circular plates (10) removes the pizza bases and transfers them to the conveyor belt (11) for filling, packaging and freezing.
To cook deep-fxozen piZzacs~ the consumer may be presented with two possibilities~ The first comprises filling a raw pizza base, freezing the pizza and cooking it before eating. The problem with non-precooked pizzas is that commercially available domestic ovens rarely permit correct, i.e. adequate, cooking of the piæzas because thev generally do not enable temperatures high enough for proper cooking of the pizza dough to be reached. On the other hand, because the pizzas are only cooked once, there is no risk of the dough drying out.
To avoid the above-mentioned problem of inadequate cooking, the raw dough i5 generally precooked at the factory in conventional ovens applying convection and contact heat which has the disadvantage of drying par-ticularly the edges of the dough not covered by filling or sauce. This phenomenon is further aggravated when the pizza is cooked for the second time during final prepara-tion in a domestic oven.
The object of the present invention is partly to precook a pizza base with a temperature gradient in the dough which enables a product of satisfactory quality to be obtained during final cooking in a domestic oven while, at the same time, avoiding excessive evaporation of water from the dough which would result in drying out of the edges not covered by the filling or the sauce. In addition, the present invention allows satisfactory pasteurization for distribution of the pizza by refrigerated transport.
The present invantion relates to a process for pas-teurizing and precooking raw pizza bases in which a vitro-ceramic plate is heated by microwaves to bring it to a temperature of 250 to 300C, the plate is then removed from the microwave field and the pizza base is placed on the ~J ~ 1 f~
plate for about 2 to 3 minutes.
According to the invention, the pizza base is precook-ed solely by underneath contact in a cold atmosphere.
The vitroceramic plate used must have a high absorp-tion capacity for microwaves, i.e. it must enable thedesired temperature to be reached in a short time. In addition, the vitroceramic plate used must have a high energy transfer coefficient. Plates of the CERAN type (Schott) or the PYROCERAM type (Dow Corning) are preferably used. These plates contain iron oxides and/or carbon fibers. They may of course contain other metal oxides which absorb microwaves.
If the pizza bases are left on the preheated vitro-ceramic plates for between 2 and 3 minutes, the surface directly in contact with the plate turns brown and is precooked, assuming a crispy character. However, the second advantage of this residence time on the plate is that it enables the pizza base to be pasteurized. This is because, after the 2 or 3 minutes, the dough in direct contact with the plate reaches a temperature of approxi-mately 200~C while the upper surface of the pizza base is at a temperature of approximately 90C. This corresponds to a good pasteurization temperature. The effect of the pasteurization is to stop the activity of the yeast.
Experiments have shown that precooking in accordance with the invention enables the germ content to be reduced to an acceptable level for a pasteurized product.
Accordingly, several uses may be envisaged for the pizza base thus treated. Thus, it may be filled, frozen and packed, which gives a precooked product useable with a standard pack which may then be cooked by the consumer in a conventional or microwave oven. Alternatively, it may be used without a filling in so-called fast-food catering. It is also possible to fill the pizza base intended for sale as a refrigerated product. Since the pizza thus obtained ~d ~
is pasteurized, it will keep for a fortnight in a refriger-ator.
In one preferred em~odiment of the process according to the invention, the vitroceramic plate is heated to between 270 and 280C and, after removal of the plate from the microwave field, the pizza base is placed thereon for about 2.5 minutes.
The pizza dough is prepared in the conventional manner with flour, water and yeast.
The power output of the oven used to heat the vitro-ceramic plates is not critical, although an oven having a power output of 5 KWatts with several microwave generators is preferably used.
The invention also relates to an arrangement for carrying out the process, comprising a conveyor helt with a plurality of vitroceramic plates and with a zone in which it passes through a microwave tunnel and a zone in which it passes through open air. The microwave tunnel comprises between three and seven microwave generators each having an output of the order of 5 KWatts.
The conveyor belt circulates at a speed of 1 to 3 m/minute. A good precooking effect is obtained with a vitroceramic plate having a thickness of 4 to 10 mm and preferably of the order of 8 mm. By means of this arrange-ment, precooked pizza bases can be continuously prepared and are pasteurized without an oven.
It is thus possible to avoid the disadvantage attend-ing the conventional pasteurization of dough, namely its excessive expansion when it is in a hot oven.
The invention is described in more detail in the following with reference to the accompanying drawing which diagrammatically illustrates the arrangement according to the invention. The conveyor belt (1) comprises vitroceram-ic plates (2) and circulates in a closed loop in the 35 arrowed direction around reversing rollers (3). The microwave tunnel (4) ~omprises six microwave generators (5). At the exit of the microwave tunnel there is an infrared thermometer (6~.
The arrangement operates as follows:
The microwave generators are switched on together with the conveyor belt which, initially, is empty. When the thermometer (6) detects a temperature of the order of 270C-280 C on the vitroceramic plates, the conveyor belt (7) begins to circulate and brings the raw pizza bases (8) onto the vitroceramic plates. Precooking takes place in the section between the two successive reversing rollers (3). At the end of that section, a carousel (9) in the form of circular plates (10) removes the pizza bases and transfers them to the conveyor belt (11) for filling, packaging and freezing.
Claims (6)
1. A process for pasteurizing and precooking raw pizza bases, characterized in that a vitroceramic plate is heated by microwaves to bring it to a temperature of 250 to 300°C, the plate is then removed from the microwave field and the pizza base is placed on the plate for about 2 to 3 minutes.
2. A process as claimed in claim 1, characterized in that the vitroceramic plate is heated to a temperature of 270 to 280°C.
3. A process as claimed in claim 1 or 2, characterized in that the pizza base is left on the vitroceramic plate for about 2.5 minutes.
4. A process as claimed in any of claims 1 to 3, charac-terized in that a vitroceramic plate containing iron oxides or carbon fibers is used.
5. An arrangement for carrying out the process claimed in any of claims 1 to 4, characterized in that it comprises a conveyor belt with a plurality of vitroceramic plates and with a zone in which it passes through a microwave tunnel and a zone in which it passes through open air.
6. An arrangement as claimed in claim 5, characterized in that the vitroceramic plates have a thickness of 4 to 10 mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1920/89A CH678143A5 (en) | 1989-05-22 | 1989-05-22 | |
| CH1920/89-5 | 1989-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2016489A1 true CA2016489A1 (en) | 1990-11-22 |
Family
ID=4221677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002016489A Abandoned CA2016489A1 (en) | 1989-05-22 | 1990-05-10 | Process and an apparatus for pasteurizing and precooking uncooked pizza bases |
Country Status (12)
| Country | Link |
|---|---|
| US (2) | US5149556A (en) |
| EP (1) | EP0399269B1 (en) |
| AT (1) | ATE88054T1 (en) |
| AU (1) | AU641647B2 (en) |
| BR (1) | BR9002403A (en) |
| CA (1) | CA2016489A1 (en) |
| CH (1) | CH678143A5 (en) |
| DE (1) | DE69001320T2 (en) |
| DK (1) | DK0399269T3 (en) |
| ES (1) | ES2055217T3 (en) |
| NO (1) | NO180321C (en) |
| PT (1) | PT94101B (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE137700T1 (en) * | 1992-05-29 | 1996-05-15 | Nestle Sa | METHOD AND APPARATUS FOR CUTTING FROZEN VIRGINS |
| ES2091370T3 (en) * | 1992-06-29 | 1996-11-01 | Nestle Sa | FLAN CARAMELO MANUFACTURING PROCEDURE USING MICROWAVES. |
| US5277924A (en) * | 1992-11-25 | 1994-01-11 | Proctor & Schwartz, Inc. | Radio frequency proofing and convection baking apparatus and method for making pizza |
| IT1263964B (en) * | 1993-02-24 | 1996-09-05 | Barilla Flli G & R | PROCEDURE FOR THE PRODUCTION OF REFRIGERATED PIZZAS READY TO BE CONSUMED |
| US5620731A (en) * | 1993-03-24 | 1997-04-15 | Turbochef, Inc. | Method of par-baking a foodstuff and product thereof |
| US5436432A (en) * | 1993-10-14 | 1995-07-25 | Cyr; Samuel A. | Microwave autoclave apparatus |
| US6159514A (en) * | 1998-02-24 | 2000-12-12 | Brummett; Barry J. | Production process for dough-based products |
| US6843167B1 (en) | 1999-04-13 | 2005-01-18 | Pizza Hut, Inc. | System and method for producing par-baked pizza crusts |
| US6327968B1 (en) | 2000-03-17 | 2001-12-11 | Pizza Hut, Inc. | System and method for producing par-baked pizza crusts |
| US7172776B2 (en) * | 2001-10-25 | 2007-02-06 | Kraft Foods Holdings, Inc. | Dough product and method for making same |
| US6822207B2 (en) * | 2002-04-19 | 2004-11-23 | Richard F. Schmidt | Continuous product conveyor having a brick baking hearth |
| US7975603B1 (en) * | 2002-12-04 | 2011-07-12 | Alkar-Rapidpak-Mp Equipment, Inc. | Food processing system |
| US7765918B2 (en) * | 2006-05-19 | 2010-08-03 | Nu-Vu Food Service Systems | Combination conveyor oven |
| US7820216B1 (en) * | 2007-10-23 | 2010-10-26 | Alkar-Rapidpak-Mp Equipment, Inc. | Apparatus and methods for pasteurizing food product |
| EP2614019B1 (en) * | 2010-09-09 | 2022-12-14 | Laitram, L.L.C. | System and method for measuring, mapping, and modifying the temperature of a conveyor |
| US20120204733A1 (en) * | 2011-02-15 | 2012-08-16 | Gilbert Dennis | Cooking System |
| AT511409B1 (en) * | 2011-05-10 | 2017-12-15 | Haas Food Equipment Gmbh | DEVICE FOR PRODUCING BAKED PRODUCTS |
| IT201700104599A1 (en) * | 2017-09-19 | 2019-03-19 | Slb S R L | Conveyor belt for a continuous food oven and continuous food oven comprising said conveyor belt |
| US11445739B2 (en) * | 2017-10-19 | 2022-09-20 | Harold Dail Kimrey, JR. | Contact members for packaged articles heated with radio frequency energy |
| AU2019388275A1 (en) * | 2018-11-29 | 2021-06-17 | Alai Food S.r.l. | Preservation process of cooked pizza |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1026103A (en) * | 1950-10-18 | 1953-04-23 | Machine for the automatic, continuous production of wafers and other cookies | |
| GB1391425A (en) * | 1971-06-09 | 1975-04-23 | Glaverbel | Electrically heated panels |
| US3881403A (en) * | 1973-03-30 | 1975-05-06 | Baker Perkins Inc | Apparatus for making bread and like food products |
| FR2279687B1 (en) * | 1974-07-26 | 1977-01-07 | Saint Gobain | HEATED WINDOWS WITH VACUUM LAYERS |
| FR2416078A2 (en) * | 1976-10-05 | 1979-08-31 | Tocco Stel | INDUCTION BRAZING PRESS FOR METAL PARTS WITH CURVED OR RAISED PERIPHERAL PORTIONS |
| FR2398459A1 (en) * | 1977-07-26 | 1979-02-23 | Fabre Henri | Bakery tunnel oven partic. for rapid baked girdle cakes - uses indirect heat exchangers to obviate carcinogenic soot contaminating prod. |
| US4367243A (en) * | 1980-11-03 | 1983-01-04 | Pizza Hut, Inc. | Method for preparing cooking pizza |
| US4439656A (en) * | 1981-04-06 | 1984-03-27 | The Stouffer Corporation | Apparatus and method for the reconstitution of frozen foods in a microwave oven |
| US4450334A (en) * | 1981-04-24 | 1984-05-22 | Raytheon Company | Microwave pizza maker |
| US4631029A (en) * | 1983-12-09 | 1986-12-23 | Lanham Machinery Company, Inc. | Baking oven with heated air distribution-II |
| US4687895A (en) * | 1984-07-30 | 1987-08-18 | Superwave Technology, Inc. | Conveyorized microwave heating system |
| DE3432341A1 (en) * | 1984-09-03 | 1986-03-06 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover | METHOD AND SYSTEM FOR CONTINUOUS PASTEURIZING OF FOODSTUFFS |
| US4591333A (en) * | 1985-03-26 | 1986-05-27 | Lincoln Manufacturing Company, Inc. | Impingement oven with radiant panel |
| US4923704A (en) * | 1985-05-24 | 1990-05-08 | Levinson Melvin L | Methods for microwave cooking in a steam-chamber kit |
| JPS62200676A (en) * | 1986-02-27 | 1987-09-04 | 松原 譲 | Heating by microwave |
| US5049711A (en) * | 1987-03-11 | 1991-09-17 | Musser's Potato Chips, Inc. | Apparatus for preparing snack food products |
| EP0287760A1 (en) * | 1987-04-15 | 1988-10-26 | HERMANN BERSTORFF Maschinenbau GmbH | Device for the uniform and rapid heating, pasteurization or sterilization of foods or the like |
| US4818831A (en) * | 1987-06-25 | 1989-04-04 | General Mills, Inc. | Amphoteric ceramic microwave heating susceptor |
| IT1226340B (en) * | 1988-07-18 | 1991-01-09 | Barilla Flli G & R | MACHINE FOR HEAT TREATMENT AND STERILIZATION WITH MICROWAVES OF PRE-PACKED FOODS. |
| FR2658591B1 (en) * | 1990-02-19 | 1993-12-31 | Scholtes | DRAFT CONTROL OF THE HEATING FIREPLACES OF A COOKING APPLIANCE, BY SENSITIVE BUTTONS. |
| US5160819A (en) * | 1991-03-11 | 1992-11-03 | Alcan International Limited | Microwave tunnel oven having means for generating higher order modes in loads |
-
1989
- 1989-05-22 CH CH1920/89A patent/CH678143A5/fr not_active IP Right Cessation
-
1990
- 1990-05-03 US US07/518,162 patent/US5149556A/en not_active Expired - Fee Related
- 1990-05-07 DE DE9090108530T patent/DE69001320T2/en not_active Expired - Fee Related
- 1990-05-07 EP EP90108530A patent/EP0399269B1/en not_active Expired - Lifetime
- 1990-05-07 ES ES90108530T patent/ES2055217T3/en not_active Expired - Lifetime
- 1990-05-07 AT AT90108530T patent/ATE88054T1/en not_active IP Right Cessation
- 1990-05-07 AU AU54797/90A patent/AU641647B2/en not_active Ceased
- 1990-05-07 DK DK90108530.8T patent/DK0399269T3/en not_active Application Discontinuation
- 1990-05-10 CA CA002016489A patent/CA2016489A1/en not_active Abandoned
- 1990-05-18 NO NO902212A patent/NO180321C/en not_active IP Right Cessation
- 1990-05-21 PT PT94101A patent/PT94101B/en not_active IP Right Cessation
- 1990-05-22 BR BR909002403A patent/BR9002403A/en not_active Application Discontinuation
-
1992
- 1992-08-31 US US07/938,002 patent/US5207151A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| AU641647B2 (en) | 1993-09-30 |
| BR9002403A (en) | 1991-08-06 |
| NO902212D0 (en) | 1990-05-18 |
| EP0399269A1 (en) | 1990-11-28 |
| NO902212L (en) | 1990-11-23 |
| DE69001320D1 (en) | 1993-05-19 |
| PT94101B (en) | 1996-12-31 |
| ES2055217T3 (en) | 1994-08-16 |
| PT94101A (en) | 1991-01-08 |
| DK0399269T3 (en) | 1993-08-09 |
| DE69001320T2 (en) | 1993-07-22 |
| EP0399269B1 (en) | 1993-04-14 |
| NO180321C (en) | 1997-04-09 |
| AU5479790A (en) | 1990-11-22 |
| US5149556A (en) | 1992-09-22 |
| US5207151A (en) | 1993-05-04 |
| ATE88054T1 (en) | 1993-04-15 |
| NO180321B (en) | 1996-12-23 |
| CH678143A5 (en) | 1991-08-15 |
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