Societe pour l'Etude et la Fabrication des Circuits Integres Speciaux (EFCIS)

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Patent Activity in the Last 10 Years

Technologies

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H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5457338 Process for manufacturing isolated semi conductor components in a semi conductor waferApr 29, 94Oct 10, 95[H01L]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4891328 Method of manufacturing field effect transistors and lateral bipolar transistors on the same substrateExpiredApr 23, 86Jan 02, 90[H01L]
4805759 Installation and method for handling delicate objects in an atmosphere having a controlled dust contentExpiredDec 08, 86Feb 21, 89[B65G]
4780429 Method of fabrication of MOS transistors having electrodes of metallic silicideExpiredJan 12, 87Oct 25, 88[H01L]
4731318 Integrated circuit comprising MOS transistors having electrodes of metallic silicide and a method of fabrication of said circuitExpiredFeb 24, 86Mar 15, 88[H01L, G03C, B44C]
4721865 Analog signal level detectorExpiredSep 18, 85Jan 26, 88[H03K]
4714951 Integrated circuit device which includes a continous layer which consists of conducting portions which are of a silicide of a refractory metal and insulating portions which are of an oxide of the metalExpiredFeb 26, 86Dec 22, 87[H01L]
4679309 Process for manufacturing isolated semi conductor components in a semi conductor waferExpiredJun 18, 84Jul 14, 87[H01L]
4651036 Logic data transfer bus preloading circuitExpiredFeb 21, 85Mar 17, 87[H03K]
4628472 Binary multiplier using ternary codeExpiredNov 18, 83Dec 09, 86[G06F]
4599575 Broad-band differential amplifier with double reverse feed-back of common modeExpiredApr 03, 85Jul 08, 86[H03F]
4595999 Non-volatile random access memory cell with CMOS transistors having a common floating gridExpiredMar 29, 84Jun 17, 86[G11C]
4593454 Process for manufacturing an integrated circuit with tantalum silicide connections utilizing self-aligned oxidationExpiredNov 20, 84Jun 10, 86[H01L]
4592802 Method of fabrication of aluminum contacts through a thick insulating layer in an integrated circuitExpiredApr 10, 85Jun 03, 86[C03C, H01L, C23F, B44C]
4575708 Decoder of a data from a subgroup of P data belonging to a group of N dataExpiredMar 20, 84Mar 11, 86[G06F]
4571283 Reversible slice lipExpiredNov 02, 84Feb 18, 86[D21F]
4561932 Method of producing integrated silicon structures on isolated islets of the substrateExpiredNov 02, 84Dec 31, 85[H01L, C03C, B44C]
4559498 Symmetrical integrator and application of said integrator to an electric filterExpiredSep 24, 82Dec 17, 85[G06G]
4541073 Non-volatile flip-flop with a static resettingExpiredSep 28, 82Sep 10, 85[G11C]
4524425 High-pass filter of the first order and application thereof to telephonyExpiredJan 10, 83Jun 18, 85[H04B, G06G, H03H]
4513265 3-Phase switched capacitor circuit having an inductive characteristicExpiredSep 24, 82Apr 23, 85[H03H]

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