|
| US4058704 | 8 Dic 1975 | 15 Nov 1977 | Taeo Kim | Coilable and severable heating element |
| US4074222 | 1 Ago 1975 | 14 Feb 1978 | | Planar heating element |
| US4247756 | 29 Jun 1979 | 27 Ene 1981 | | Heated floor mat |
| US4309596 | 24 Jun 1980 | 5 Ene 1982 | Sunbeam Corporation | Flexible self-limiting heating cable |
| US4314231 | 21 Abr 1980 | 2 Feb 1982 | Raychem Corporation | Conductive polymer electrical devices |
| US4330704 | 8 Ago 1980 | 18 May 1982 | Raychem Corporation | Electrical devices comprising conductive polymers |
| US4334148 | 16 Ene 1978 | 8 Jun 1982 | Raychem Corporation | PTC Heaters |
| US4398084 | 15 Jun 1981 | 9 Ago 1983 | Raychem Corporation | End seal for strip heaters |
| US4575617 | 12 Abr 1984 | 11 Mar 1986 | Cooperheat | Heat tracing tape and power control system |
| US4641423 | 17 May 1984 | 10 Feb 1987 | Fast Heat Element Manufacturing Co., Inc. | Method of making electrically heated nozzles and nozzle systems |
| US4695091 | 19 Nov 1986 | 22 Sep 1987 | I.G. Bauerhin GmbH Elektro-Technische Fabrik | Heat conductor connections between seats and backrests of vehicles |
| US4764664 | 20 Nov 1985 | 16 Ago 1988 | Raychem Corporation | Electrical devices comprising conductive polymer compositions |
| US4841124 | 27 Abr 1987 | 20 Jun 1989 | Cox & Company, Inc. | Strain-resistant heated helicopter rotor blade |
| US4866253 | 15 Ago 1988 | 12 Sep 1989 | Raychem Corporation | Electrical devices comprising conductive polymer compositions |
| US4876440 | 7 Feb 1989 | 24 Oct 1989 | Raychem Corporation | Electrical devices comprising conductive polymer compositions |
| US4954695 | 12 May 1988 | 4 Sep 1990 | Raychem Corporation | Self-limiting conductive extrudates and methods therefor |