Inventor · disambiguated record
Keiji Oya
Also filed as: OYA KEIJI
8 granted patents·1 pending application·41 citations·filing 1988–2005
85Inventor score
Top patents by PatentIndex Score
9 records- 0171US7316836B2Optical recording mediumSONY CORP·Filed 2004·Granted Jan 8, 2008·9 cites·21 claims
- 0251US4980336AHeat-sensitive recording materialADEKA ARGUS CHEMICAL CO LTD·Filed 1989·Granted Dec 25, 1990·6 cites·3 claims
- 0351US4944980AOptical recording materialADEKA ARGUS CHEMICAL CO LTD·Filed 1989·Granted Jul 31, 1990·8 cites·1 claims
- 0447US5081099AHeat-sensitive recording materialADEKA ARGUS CHEMICAL CO LTD·Filed 1990·Granted Jan 14, 1992·5 cites·9 claims
- 0543US8029976B2Optical recording medium and optical recording-reproducing method using thereofSONY CORP·Filed 2005·Granted Oct 4, 2011·2 cites·11 claims
- 0642US4918046AHeat-sensitive recording materialADEKA ARGUS CHEMICAL CO LTD·Filed 1988·Granted Apr 17, 1990·4 cites·2 claims
- 0740US5728646AHeat-sensitive recording materialASAHI DENKA KOGYO KK·Filed 1996·Granted Mar 17, 1998·5 cites·6 claims
- 0839US2003224293A1Optical recording materialASAHI DENKA KOGYO KK·Filed 2003·Application pending·0 cites
- 0927US5607894AHeat-sensitive recording materialASAHI DENKA KOGYO KK·Filed 1995·Granted Mar 4, 1997·2 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →