Inventor · disambiguated record
Akio Ohishi
Also filed as: OHISHI AKIO
6 granted patents·126 citations·filing 1986–2005
84Inventor score
Top patents by PatentIndex Score
6 records- 0183US5340637AOptical device diffraction gratings and a photomask for use in the sameHITACHI LTD·Filed 1992·Granted Aug 23, 1994·67 cites·11 claims
- 0275US7449720B2Epitaxial wafer for semiconductor light-emitting devices, and semiconductor light-emitting deviceHITACHI CABLE·Filed 2005·Granted Nov 11, 2008·6 cites·10 claims
- 0369US4819036ASemiconductor deviceHITACHI LTD·Filed 1986·Granted Apr 4, 1989·25 cites·16 claims
- 0461US4841531ASemiconductor laser deviceHITACHI LTD·Filed 1988·Granted Jun 20, 1989·13 cites·3 claims
- 0555US4905057ASemiconductor devicesHITACHI LTD·Filed 1989·Granted Feb 27, 1990·10 cites·26 claims
- 0642US5034942ASystem having a function of reproducing optical informationHITACHI LTD·Filed 1988·Granted Jul 23, 1991·5 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →