|
| US4003554 | 12 Feb 1975 | 18 Jan 1977 | Solvay & Cie | Equipment for heating polar polymers to the temperature at which they become plastic |
| US4334136 | 1 Oct 1979 | 8 Jun 1982 | Douglas P. Mahan | Microwave treating mechanism |
| US4510361 | 3 May 1982 | 9 Apr 1985 | | Horizontal axis tumbler type microwave drying mechanism |
| US4577078 | 30 May 1984 | 18 Mar 1986 | Kabushiki Kaisha Toshiba | Apparatus for preheating mold resin for a semiconductor device |
| US4866233 | 30 Aug 1988 | 12 Sep 1989 | Snowdrift Corporation N.V. | System for heating objects with microwaves |
| US4952763 | 19 Dec 1989 | 28 Aug 1990 | Snowdrift Corp. N.V. | System for heating objects with microwaves |