Inventor · disambiguated record
Takahiko Urai
Also filed as: URAI TAKAHIKO
13 granted patents·315 citations·filing 1987–1997
93Inventor score
Files withNEC CORP13
Top patents by PatentIndex Score
13 records- 0182US4881200AErasable programmable read only memory deviceNEC CORP·Filed 1988·Granted Nov 14, 1989·46 cites·9 claims
- 0281US4908798ASemiconductor memory device with memory cell arrays and a redundant memory cell array associated with a small number of write-in and sense amplifying circuitsNEC CORP·Filed 1988·Granted Mar 13, 1990·44 cites·7 claims
- 0380US4954729AOutput buffer circuit used for stable voltage sourceNEC CORP·Filed 1989·Granted Sep 4, 1990·28 cites·11 claims
- 0478US5798547ANon-volatile semiconductor memory device having NAND structure cellsNEC CORP·Filed 1996·Granted Aug 25, 1998·45 cites·4 claims
- 0569US4905197ASemiconductor memory having circuitry for discharging a digit line before verifying operationNEC CORP·Filed 1988·Granted Feb 27, 1990·26 cites·4 claims
- 0667US4855956ASemiconductor memory device with improved cell arrangementNEC CORP·Filed 1987·Granted Aug 8, 1989·23 cites·6 claims
- 0762US5732019AInitialization of electrically erasable non-volatile semiconductor memory deviceNEC CORP·Filed 1997·Granted Mar 24, 1998·22 cites·20 claims
- 0862US5347486ANonvolatile memory device having self-refresh functionNEC CORP·Filed 1993·Granted Sep 13, 1994·22 cites·7 claims
- 0957US5892715ANon-volatile semiconductor memory device with variable source voltageNEC CORP·Filed 1997·Granted Apr 6, 1999·18 cites·18 claims
- 1049US5684747AMethod for erasing nonvolatile semiconductor memory device incorporating redundancy memory cellsNEC CORP·Filed 1996·Granted Nov 4, 1997·12 cites·13 claims
- 1149US5018104ARedundant circuit incorporated in semiconductor memory deviceNEC CORP·Filed 1989·Granted May 21, 1991·12 cites·5 claims
- 1247US5396499ASemiconductor memory device with redundant memory and floatable data lineNEC CORP·Filed 1992·Granted Mar 7, 1995·12 cites·5 claims
- 1332US5484742AProcess for preparing a semiconductor device with a narrow-channel MOS transistorNEC CORP·Filed 1992·Granted Jan 16, 1996·5 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →