Inventor · disambiguated record
Yasuhiko Hagihara
Also filed as: HAGIHARA YASUHIKO
15 granted patents·3 pending applications·199 citations·filing 1992–2012
93Inventor score
Top patents by PatentIndex Score
18 records- 0194US7352067B2Stacked semiconductor deviceNEC CORP·Filed 2005·Granted Apr 1, 2008·35 cites·15 claims
- 0287US7330368B2Three-dimensional semiconductor device provided with interchip interconnection selection means for electrically isolating interconnections other than selected interchip interconnectionsNEC CORP·Filed 2005·Granted Feb 12, 2008·16 cites·9 claims
- 0387US7221614B2Stacked semiconductor memory deviceELPIDA MEMORY INC·Filed 2005·Granted May 22, 2007·18 cites·20 claims
- 0486US7209376B2Stacked semiconductor memory deviceELPIDA MEMORY INC·Filed 2005·Granted Apr 24, 2007·17 cites·14 claims
- 0566US5426598AAdder and multiplier circuit employing the sameNEC CORP·Filed 1994·Granted Jun 20, 1995·45 cites·7 claims
- 0663US6918050B2Delay adjustment circuit and a clock generating circuit using the sameNEC CORP·Filed 2001·Granted Jul 12, 2005·11 cites·6 claims
- 0760US6229340B1Semiconductor integrated circuitNEC CORP·Filed 1999·Granted May 8, 2001·16 cites·5 claims
- 0857US7236006B2Logic circuit, logic circuit design method, logic circuit design system, and logic circuit design programNEC CORP·Filed 2005·Granted Jun 26, 2007·1 cites·5 claims
- 0953US2009315147A1Semiconductor chip and semiconductor deviceNEC CORP·Filed 2009·Application pending·0 cites
- 1051US5231415ABooth's multiplying circuitNEC CORP·Filed 1993·Granted Jul 27, 1993·23 cites·4 claims
- 1147US2006145301A1Semiconductor chip and semiconductor deviceELPIDA MEMORY INC·Filed 2006·Application pending·0 cites
- 1243US8065645B2Logic circuit, logic circuit design method, logic circuit design system, and logic circuit design programINUI SHIGETO·Filed 2007·Granted Nov 22, 2011·1 cites·12 claims
- 1337US5430668AFloating point multiplier capable of easily performing a failure detection testNEC CORP·Filed 1994·Granted Jul 4, 1995·7 cites·8 claims
- 1437US5331581AArtificial random-number pattern generating circuitNEC CORP·Filed 1992·Granted Jul 19, 1994·9 cites·8 claims
- 1533US6429688B2Semiconductor integrated circuitNEC CORP·Filed 2001·Granted Aug 6, 2002·0 cites·1 claims
- 1632US9343902B2Uninterruptible power supply apparatus and control methodHAGIHARA YASUHIKO·Filed 2012·Granted May 17, 2016·0 cites·10 claims
- 1729US2001054915A1Semiconductor integrated circuitFiled 1999·Application pending·0 cites
- 1828US6329844B2Semiconductor integrated circuitNEC CORPORATATION·Filed 2001·Granted Dec 11, 2001·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →