WO2011092269A3 - Dispense head system and method for continuous extrusion of thermoplastics - Google Patents

Dispense head system and method for continuous extrusion of thermoplastics Download PDF

Info

Publication number
WO2011092269A3
WO2011092269A3 PCT/EP2011/051181 EP2011051181W WO2011092269A3 WO 2011092269 A3 WO2011092269 A3 WO 2011092269A3 EP 2011051181 W EP2011051181 W EP 2011051181W WO 2011092269 A3 WO2011092269 A3 WO 2011092269A3
Authority
WO
WIPO (PCT)
Prior art keywords
head system
thermoplastic material
dispense head
feed pipe
continuous extrusion
Prior art date
Application number
PCT/EP2011/051181
Other languages
French (fr)
Other versions
WO2011092269A2 (en
Inventor
Kim Ragaert
Ludwig Cardon
Marcel Moerman
Original Assignee
Universiteit Gent
Hogeschool Gent
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Universiteit Gent, Hogeschool Gent filed Critical Universiteit Gent
Publication of WO2011092269A2 publication Critical patent/WO2011092269A2/en
Publication of WO2011092269A3 publication Critical patent/WO2011092269A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/02—Small extruding apparatus, e.g. handheld, toy or laboratory extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/255—Flow control means, e.g. valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/256—Exchangeable extruder parts
    • B29C48/2565—Barrel parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/39—Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/475—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/793—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling upstream of the plasticising zone, e.g. heating in the hopper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/793—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling upstream of the plasticising zone, e.g. heating in the hopper
    • B29C48/797—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92866—Inlet shaft or slot, e.g. passive hopper; Injector, e.g. injector nozzle on barrel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules

Abstract

The present invention provides a dispense head system (10) and method for continuous extrusion of thermoplastic materials, e.g. into filaments or fibres. The dispense head system (10) comprises - an input section (40) for receiving the thermoplastic material in granular or powder form, - a feed pipe (50) for transporting the thermoplastic material received in the input section towards an output port (300) of the feed pipe (50), - a heatable barrel (13) for receiving transported thermoplastic material from the feed pipe (50) and rendering it viscous, and - an output (EP) to the heatable barrel for extrusion of the viscous thermoplastic material. In embodiments of the present invention, the dispense head system (10) furthermore comprises a transfer zone (TZ) located at the output port (300) of the feed pipe (50) and adapted for controlled preheating of the thermoplastic material.
PCT/EP2011/051181 2010-01-29 2011-01-28 Continuous extrusion of thermoplastics WO2011092269A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1001502.2 2010-01-29
GBGB1001502.2A GB201001502D0 (en) 2010-01-29 2010-01-29 Continuous extrusion of thermoplastics by discontinuous material feed

Publications (2)

Publication Number Publication Date
WO2011092269A2 WO2011092269A2 (en) 2011-08-04
WO2011092269A3 true WO2011092269A3 (en) 2011-09-29

Family

ID=42084196

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/051181 WO2011092269A2 (en) 2010-01-29 2011-01-28 Continuous extrusion of thermoplastics

Country Status (2)

Country Link
GB (1) GB201001502D0 (en)
WO (1) WO2011092269A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104108183A (en) * 2014-07-13 2014-10-22 深圳市米思达科技有限公司 Desktop-type 3D printing material shaping machine

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3117982B1 (en) * 2015-07-16 2019-12-25 Sculpman Bvba 3d printing system and process
WO2017075396A1 (en) * 2015-10-30 2017-05-04 Stratasys, Inc. Viscosity pump with fill and flow control and method thereof
DE102016220496A1 (en) * 2016-10-19 2018-04-19 Robert Bosch Gmbh Method and plant for the additive manufacturing of a three-dimensional component
ES2702993A1 (en) * 2017-09-05 2019-03-06 Cnc Barcenas Bellon S L ADDITIVE MANUFACTURING EQUIPMENT THROUGH FOUNDED DEPOSITION FEEDED WITH POLYMER GROWTH. (Machine-translation by Google Translate, not legally binding)
IT201800001715A1 (en) * 2018-01-24 2019-07-24 Gimac Di Maccagnan Giorgio EXTRUSION DEVICE
FR3085129B1 (en) * 2018-08-27 2020-10-09 Soliquid DEVICE AND METHOD FOR THREE-DIMENSIONAL PRINTING IN GEL
CN109554769A (en) * 2019-01-11 2019-04-02 苏州帝达化纤机械制造有限公司 A kind of melt injection device and its dynamic mixer
DE102019217113A1 (en) * 2019-02-28 2020-09-03 Aim3D Gmbh Filling device for supplying processing material to an extruder screw and method for supplying processing material to an extruder screw
EP4003696A1 (en) * 2019-07-26 2022-06-01 General Electric Company Automated pellet drying and dispensing system for additive manufacturing
CN110815760A (en) * 2019-12-18 2020-02-21 安徽三绿实业有限公司 Heating device is used in production of 3D printing consumables
US20230311417A1 (en) * 2022-04-04 2023-10-05 Caracol S.R.L. Device And Method For Feeding Polymeric Material To A Printhead Of An Additive Manufacturing Machine And Additive Manufacturing Machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06226869A (en) * 1993-02-04 1994-08-16 Nissan Motor Co Ltd Manufacture of three-dimensional foamed body and device therefor
US5764521A (en) * 1995-11-13 1998-06-09 Stratasys Inc. Method and apparatus for solid prototyping
US5968561A (en) * 1998-01-26 1999-10-19 Stratasys, Inc. High performance rapid prototyping system
US20030041956A1 (en) * 2001-08-31 2003-03-06 Pigott Maurice J. Anti-skid elements for plastic products and products made therefrom
US20090273122A1 (en) * 2008-04-30 2009-11-05 Stratasys, Inc. Liquefier assembly for use in extrusion-based digital manufacturing systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06226869A (en) * 1993-02-04 1994-08-16 Nissan Motor Co Ltd Manufacture of three-dimensional foamed body and device therefor
US5764521A (en) * 1995-11-13 1998-06-09 Stratasys Inc. Method and apparatus for solid prototyping
US5968561A (en) * 1998-01-26 1999-10-19 Stratasys, Inc. High performance rapid prototyping system
US20030041956A1 (en) * 2001-08-31 2003-03-06 Pigott Maurice J. Anti-skid elements for plastic products and products made therefrom
US20090273122A1 (en) * 2008-04-30 2009-11-05 Stratasys, Inc. Liquefier assembly for use in extrusion-based digital manufacturing systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104108183A (en) * 2014-07-13 2014-10-22 深圳市米思达科技有限公司 Desktop-type 3D printing material shaping machine

Also Published As

Publication number Publication date
WO2011092269A2 (en) 2011-08-04
GB201001502D0 (en) 2010-03-17

Similar Documents

Publication Publication Date Title
WO2011092269A3 (en) Dispense head system and method for continuous extrusion of thermoplastics
WO2012037329A3 (en) Semi-crystalline consumable materials for use in extrusion-based additive manufacturing systems
WO2008061520A3 (en) Device and method for transporting excess particulate material on the construction of models
US20170320031A1 (en) Squeezing-Roll Granulator, Granulating System Comprising Same, And Use Of The Squeezing-Roll Granulator
TW200732050A (en) Extrusion/dispensing systems and methods
MX343192B (en) Method and system for folding and sealing bags.
WO2011005492A8 (en) Consumable materials having customized characteristics
WO2009052773A3 (en) Method and device for conveying particulate material during the layer-wise production of patterns
ZA201007908B (en) A conveyor for transporting powder,and a method for conveying powder
WO2008113338A3 (en) Microwave vacuum drying systems and method for drying lumpy, powdery, or granulated products by means of microwaves
EP2323929A4 (en) Exteriorly mounted wear liner for bulk material conveyor belt systems
ATE527884T1 (en) PACKAGING DEVICE AND METHOD FOR CONTROLLING A PACKAGING DEVICE
GB2484410A (en) Feeder and extrusion device and method of use thereof
DK1903102T3 (en) Device for transporting biomass materials
GB0803027D0 (en) Bonding apparatus
WO2007125411A3 (en) Filling unit
WO2015177580A3 (en) Polymer blend and polymer agglomerate containing recycled multilayer film waste and fiber reinforced plastic waste and process for preparing said agglomerate
UA109972C2 (en) Agricultural system for conveying product to holding container
MY179894A (en) Anti-refill dispensing fitment for a container
TW200613328A (en) Polymeric materials, which contain inorganic solids, and methods for the production thereof
WO2012109053A3 (en) Extrusion blow molding apparatus for preparing polyester articles
SG11202107504XA (en) Optically heat-generating composite material, nanocluster, substance delivery carrier and pharmaceutical composition
WO2009138997A3 (en) A method and apparatus for rapidly sourcing resumes for an employment website
SE0801566L (en) Systems and method of filling collapsible packages
MX2009011497A (en) Process and system for destroying carbonaceous materials and composition and system thereof.

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11701268

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11701268

Country of ref document: EP

Kind code of ref document: A2