Inventor · disambiguated record
Keiko Oka
Also filed as: OKA KEIKO
9 granted patents·1 pending application·160 citations·filing 1994–2022
85Inventor score
Files withHITACHI HIGH TECH CORP2KURARAY CO2BIO SENSOR KENKYUSHO KK1BIOSENSOR RESEARCH LAB CO LTD1HITACHI GLOBAL LIFE SOLUTIONS INC1
Top patents by PatentIndex Score
10 records- 0189US6139963APolyvinyl alcohol hydrogel and process for producing the sameKURARAY CO·Filed 1997·Granted Oct 31, 2000·87 cites·12 claims
- 0286US10830706B2Defect inspection apparatus and defect inspection methodHITACHI HIGH TECH CORP·Filed 2018·Granted Nov 10, 2020·2 cites·16 claims
- 0377US11378521B2Optical condition determination system and optical condition determination methodHITACHI LTD·Filed 2020·Granted Jul 5, 2022·1 cites·10 claims
- 0468US11143598B2Defect inspection apparatus and defect inspection methodHITACHI HIGH TECH CORP·Filed 2020·Granted Oct 12, 2021·0 cites·18 claims
- 0556US12385679B2Refrigerant quantity diagnosis device, refrigerant system, and refrigerant quantity diagnosis methodHITACHI GLOBAL LIFE SOLUTIONS INC·Filed 2022·Granted Aug 12, 2025·0 cites·14 claims
- 0646US2011027890A1Material for cell cultureKURARAY CO·Filed 2006·Application pending·0 cites
- 0745US8730471B2DUV-UV band spectroscopic optical system and spectrometer using sameOKA KEIKO·Filed 2009·Granted May 20, 2014·1 cites·9 claims
- 0844US5556760AMethod for assaying ureaseBIOSENSOR RESEARCH LAB CO LTD·Filed 1995·Granted Sep 17, 1996·62 cites·7 claims
- 0936US8705024B2Wavefront aberration measuring method and device thereforYOSHITAKE YASUHIRO·Filed 2010·Granted Apr 22, 2014·0 cites·9 claims
- 1034US5674696AApparatus for the determination of a trace amount of an analyte substance or organismBIO SENSOR KENKYUSHO KK·Filed 1994·Granted Oct 7, 1997·7 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →