ZAIDAN HOJIN HANDOTAI KENKYU SHINKOKAI

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7912553 Electromagnetic wave applicatorExpiredNov 27, 03Mar 22, 11[A61F, H05B]
2006/0054,940 Short channel insulated-gate static induction transistor and method of manufacturing the sameAbandonedSep 09, 05Mar 16, 06[H01L]
5808328 High-speed and high-density semiconductor memoryExpiredJun 05, 95Sep 15, 98[H01L]
5557119 Field effect transistor having unsaturated drain current characteristicExpiredMay 24, 95Sep 17, 96[H01L]
5169795 Method of manufacturing step cut type insulated gate SIT having low-resistance electrodeExpiredAug 20, 91Dec 08, 92[H01L]
5065206 Photoelectric converting device with accumulating gate regionExpiredJan 25, 89Nov 12, 91[H01L]
5038188 Insulated-gate type transistor and semiconductor integrated circuit using such transistorExpiredMar 12, 90Aug 06, 91[H01L]
5019876 Semiconductor photo-electric converterExpiredApr 04, 89May 28, 91[H01L]
4994872 Insulated gate static induction transistor and integrated circuit including sameExpiredJul 29, 88Feb 19, 91[H01L]
4994999 High-speed and high-density semiconductor memoryExpiredAug 17, 87Feb 19, 91[A01L, G11C]
4985738 Semiconductor switching deviceExpiredDec 05, 86Jan 15, 91[H01L]
4984049 Static induction thyristorExpiredJul 05, 88Jan 08, 91[H01L]
4975755 Optically controllable static induction thyristor deviceExpiredSep 22, 88Dec 04, 90[H01L]
4968491 Apparatus for performing epitaxial growth of ZNSE crystal from melt thereofExpiredAug 25, 87Nov 06, 90[F30B]
4952996 Static induction and punching-through photosensitive transistor devicesExpiredJan 25, 89Aug 28, 90[H01L]
4939571 Insulated-gate type transistor and semiconductor integrated circuit using such transistorExpiredAug 04, 87Jul 03, 90[H01L]
4935798 Static induction type thyristorExpiredMay 08, 87Jun 19, 90[H01C]
4917757 Method of performing solution growth of ZnSe crystalsExpiredFeb 03, 88Apr 17, 90[C30B]
4914043 Method of making an integrated light-triggered and light-quenched static induction thyristorExpiredApr 14, 89Apr 03, 90[H01L]
4909998 Apparatus for performing solution growth of group II-VI compound semiconductor crystalExpiredMay 09, 89Mar 20, 90[C30B]

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