Inventor · disambiguated record
Keizo Kawaguchi
Also filed as: KAWAGUCHI KEIZO
8 granted patents·1 pending application·103 citations·filing 1985–2015
85Inventor score
Top patents by PatentIndex Score
9 records- 0179US4664711AInk for marking penPILOT INK CO LTD·Filed 1985·Granted May 12, 1987·44 cites·14 claims
- 0263US4749618ATip member for coating toolPILOT INK CO LTD·Filed 1986·Granted Jun 7, 1988·26 cites·4 claims
- 0355US7084422B2Semiconductor light emitting device having quantum well layer sandwiched between carrier confinement layersSTANLEY ELECTRIC CO LTD·Filed 2005·Granted Aug 1, 2006·1 cites·7 claims
- 0450US7880187B2Semiconductor light emitting device having narrow radiation spectrumSTANLEY ELECTRIC CO LTD·Filed 2005·Granted Feb 1, 2011·1 cites·17 claims
- 0546US5707900AMethod of heat-treating semiconductor crystal of a group II-group VI compoundSTANLEY ELECTRIC CO LTD·Filed 1996·Granted Jan 13, 1998·14 cites·4 claims
- 0635US6900467B2Semiconductor light emitting device having quantum well layer sandwiched between carrier confinement layersSTANLEY ELECTRIC CO LTD·Filed 2003·Granted May 31, 2005·0 cites·12 claims
- 0734US9595635B2Point source light-emitting diodeDAIDO STEEL CO LTD·Filed 2015·Granted Mar 14, 2017·0 cites·20 claims
- 0833US2006146903A1Semiconductor light emitting device suppressing radiation of light other than light having desired wavelengthSTANLEY ELECTRIC CO LTD·Filed 2005·Application pending·0 cites
- 0930US5980571ASubstitute-heart control apparatusCOLIN CORP·Filed 1997·Granted Nov 9, 1999·17 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →