Inventor · disambiguated record
Keizo Sakiyama
Also filed as: SAKIYAMA KEIZO
31 granted patents·1,061 citations·filing 1984–2004
98Inventor score
Top patents by PatentIndex Score
31 records- 0196US6753562B1Spin transistor magnetic random access memory deviceSHARP LAB OF AMERICA INC·Filed 2003·Granted Jun 22, 2004·140 cites·16 claims
- 0291US5043946ASemiconductor memory deviceSHARP KK·Filed 1990·Granted Aug 27, 1991·75 cites·1 claims
- 0386US5416735ANon-volatile random access memory with ferroelectric capacitorSHARP KK·Filed 1994·Granted May 16, 1995·59 cites·2 claims
- 0486US5075888ASemiconductor memory device having a volatile memory device and a non-volatile memory deviceSHARP KK·Filed 1989·Granted Dec 24, 1991·41 cites·4 claims
- 0586US5049970AHigh resistive elementSHARP KK·Filed 1990·Granted Sep 17, 1991·66 cites·4 claims
- 0684US5515984AMethod for etching PT filmSHARP KK·Filed 1995·Granted May 14, 1996·70 cites·4 claims
- 0783US5108783AProcess for producing semiconductor devicesSHARP KK·Filed 1989·Granted Apr 28, 1992·66 cites·10 claims
- 0882US5965942ASemiconductor memory device with amorphous diffusion barrier between capacitor and plugSHARP KK·Filed 1997·Granted Oct 12, 1999·67 cites·2 claims
- 0979US7027322B2EPIR device and semiconductor devices utilizing the sameSHARP KK·Filed 2004·Granted Apr 11, 2006·26 cites·27 claims
- 1076US5357460ASemiconductor memory device having two transistors and at least one ferroelectric film capacitorSHARP KK·Filed 1992·Granted Oct 18, 1994·39 cites·5 claims
- 1174US7208768B2Electroluminescent deviceSHARP LAB OF AMERICA INC·Filed 2004·Granted Apr 24, 2007·23 cites·54 claims
- 1273US5299152AAnti-fuse memory device with switched capacitor setting methodSHARP KK·Filed 1992·Granted Mar 29, 1994·42 cites·5 claims
- 1371US6352899B1Raised silicide source/drain MOS transistors having enlarged source/drain contact regions and methodSHARP LAB OF AMERICA INC·Filed 2000·Granted Mar 5, 2002·17 cites·21 claims
- 1471US5293075ASemiconductor device with PZT/PLZT film and lead-containing electrodeSHARP KK·Filed 1992·Granted Mar 8, 1994·29 cites·3 claims
- 1571US5140552ASemiconductor memory device having a volatile memory device and a non-volatile memory deviceSHARP KK·Filed 1991·Granted Aug 18, 1992·31 cites·1 claims
- 1670US5962889ANonvolatile semiconductor memory with a floating gate that has a bottom surface that is smaller than the upper surfaceSHARP KK·Filed 1996·Granted Oct 5, 1999·32 cites·10 claims
- 1770US5181188ASemiconductor memory deviceSHARP KK·Filed 1990·Granted Jan 19, 1993·29 cites·18 claims
- 1864US5299151AMethod for writing into semiconductor memorySHARP KK·Filed 1991·Granted Mar 29, 1994·24 cites·8 claims
- 1957US5776356AMethod for etching ferroelectric filmSHARP KK·Filed 1995·Granted Jul 7, 1998·24 cites·24 claims
- 2057US5331181ANon-volatile semiconductor memorySHARP KK·Filed 1993·Granted Jul 19, 1994·17 cites·6 claims
- 2157US5290725ASemiconductor memory device and a method for producing the sameSHARP KK·Filed 1991·Granted Mar 1, 1994·18 cites·3 claims
- 2257US4695745AMonolithic semiconductor integrated circuit with programmable elements for minimizing deviation of threshold valueSHARP KK·Filed 1984·Granted Sep 22, 1987·12 cites·4 claims
- 2356US5401993ANon-volatile memorySHARP KK·Filed 1993·Granted Mar 28, 1995·17 cites·8 claims
- 2456US5119163ASemiconductor deviceSHARP KK·Filed 1991·Granted Jun 2, 1992·21 cites·2 claims
- 2554US5383151ADynamic random access memorySHARP KK·Filed 1993·Granted Jan 17, 1995·15 cites·4 claims
- 2651US5414653ANon-volatile random access memory having a high load deviceSHARP KK·Filed 1993·Granted May 9, 1995·13 cites·4 claims
- 2748US5411904AProcess for fabricating nonvolatile random access memory having a tunnel oxide filmSHARP KK·Filed 1994·Granted May 2, 1995·12 cites·2 claims
- 2848US5063425ASemiconductor memory device with capacitor over non-volatile memory cell gate structureSHARP KK·Filed 1990·Granted Nov 5, 1991·13 cites·15 claims
- 2939US5139964AMethod for forming isolation region of semiconductor deviceSHARP KK·Filed 1991·Granted Aug 18, 1992·10 cites·6 claims
- 3038US5172199ACompact nonvolatile semiconductor memory device using stacked active and passive elementsSHARP KK·Filed 1991·Granted Dec 15, 1992·6 cites·5 claims
- 3135US5420077AMethod for forming a wiring layerSHARP KK·Filed 1993·Granted May 30, 1995·7 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →