Balzers Aktiengesellschaft fur Hochvakuumtechnik und Dunne Schichten

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4361331 Seal for vacuum flange connectionsExpiredNov 14, 80Nov 30, 82[F16J]
4343455 High vacuum valve constructionExpiredFeb 21, 80Aug 10, 82[F16K]
4290614 Sealing construction for vacuum connectionExpiredMar 26, 79Sep 22, 81[F16J]
4279216 Cathode shielded coating apparatusExpiredJan 28, 80Jul 21, 81[C23C]
4258283 Cathode for electron emissionExpiredAug 31, 78Mar 24, 81[H01J]
4254159 Method of producing gold-color coatingsExpiredDec 20, 78Mar 03, 81[B05D]
4235572 Rotary displacement pump with intake through a first sealing slideExpiredNov 30, 78Nov 25, 80[F04C]
4217856 Vacuum evaporation apparatusExpiredJun 27, 78Aug 19, 80[C23C]
4201479 Device for measuring the reflection of a plane, specularly reflecting surfaceExpiredMay 26, 78May 06, 80[G01N]
4183982 Fluid protective wall cover in a vapor deposition chamberExpiredMay 05, 78Jan 15, 80[C23C, B05D]
4182265 Wafer supportExpiredMar 14, 78Jan 08, 80[B05C]
4181161 Method of producing a high vacuum in a containerExpiredOct 13, 78Jan 01, 80[C23C, B65B]

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