Inventor · disambiguated record
Sigeo Ohsaka
Also filed as: OHSAKA SIGEO
3 granted patents·130 citations·filing 1980–1994
76Inventor score
Files withFUJITSU LTD3
Top patents by PatentIndex Score
3 records- 0186US4306351AMethod for producing a semiconductor laser elementFUJITSU LTD·Filed 1980·Granted Dec 22, 1981·74 cites·26 claims
- 0275US5777792AOptical film, an antireflection film, a reflection film, a method for forming the optical film, the antireflection film or the reflection film and an optical deviceFUJITSU LTD·Filed 1994·Granted Jul 7, 1998·43 cites·24 claims
- 0353US4360919ASemiconductor light emitting deviceFUJITSU LTD·Filed 1980·Granted Nov 23, 1982·13 cites·18 claims
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