Sigeo Ohsaka

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Kawasaki, JP

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Patents Grantslast 30 patents

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Optical film, an antireflection film, a reflection film, a method f...
- Patent number 5,777,792
- Issue date Jul 7, 1998
- Fujitsu Limited
- Nobumasa Okada
- G02 - OPTICS
Information Patent Grant
Semiconductor light emitting device
- Patent number 4,360,919
- Issue date Nov 23, 1982
- Fujitsu Limited
- Takao Fujiwara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for producing a semiconductor laser element
- Patent number 4,306,351
- Issue date Dec 22, 1981
- Fujitsu Limited
- Sigeo Ohsaka
- H01 - BASIC ELECTRIC ELEMENTS