ECD-ANR Energy Conversion Company

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4588520 Powder pressed thermoelectric materials and method of making sameExpiredSep 03, 82May 13, 86[H01B]
4497973 Thermoelectric device exhibiting decreased stressExpiredFeb 28, 83Feb 05, 85[H01L]
4491679 Thermoelectric materials and devices made therewithExpiredJul 21, 83Jan 01, 85[H01L]
4489742 Thermoelectric device and method of making and using sameExpiredJul 21, 83Dec 25, 84[H01L]
4485389 Amorphous semiconductors equivalent to crystalline semiconductorsExpiredSep 29, 82Nov 27, 84[H01L]
4468854 Method and apparatus for manufacturing thermoelectric devicesExpiredApr 29, 82Sep 04, 84[H01L]
4465894 Substrateless thermoelectric device and method of making sameExpiredApr 07, 83Aug 14, 84[H01L]
4465895 Thermoelectric devices having improved elements and element interconnects and method of making sameExpiredJun 01, 83Aug 14, 84[H01L]
4459428 Thermoelectric device and method of making sameExpiredApr 28, 82Jul 10, 84[H01L]
4448028 Thermoelectric systems incorporating rectangular heat pipesExpiredApr 29, 82May 15, 84[H01L, F25B]
4447277 Multiphase thermoelectric alloys and method of making sameExpiredAug 27, 82May 08, 84[C22C]
4226898 Amorphous semiconductors equivalent to crystalline semiconductors produced by a glow discharge processExpiredMar 16, 78Oct 07, 80[H01L]
4217374 Amorphous semiconductors equivalent to crystalline semiconductorsExpiredMar 08, 78Aug 12, 80[H01L]

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