Inventor · disambiguated record
Yasushi Okuyama
Also filed as: OKUYAMA YASUSHI
5 granted patents·144 citations·filing 1974–1988
83Inventor score
Top patents by PatentIndex Score
5 records- 0187US4068018AProcess for preparing a mask for use in manufacturing a semiconductor deviceNIPPON ELECTRIC CO·Filed 1975·Granted Jan 10, 1978·70 cites·9 claims
- 0266US4918503ADynamic random access memory device having a plurality of one transistor type memory cellsNEC CORP·Filed 1988·Granted Apr 17, 1990·26 cites·10 claims
- 0355US4835597ASemiconductor device having improved multi-layer structure of insulating film and conductive filmNEC CORP·Filed 1987·Granted May 30, 1989·25 cites·6 claims
- 0447US4255210AMethod for manufacturing a read-only memory deviceNIPPON ELECTRIC CO·Filed 1979·Granted Mar 10, 1981·11 cites·5 claims
- 0538US3952816ADrilling system and method of pulling it upSUMITOMO METAL MINING CO·Filed 1974·Granted Apr 27, 1976·12 cites·2 claims
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