Yoh Ogawa

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Sendai, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical function semiconductor device
- Patent number 4,521,681
- Issue date Jun 4, 1985
- Tohoku University
- Humio Inaba
- G02 - OPTICS
Information Patent Grant
Laser functional device
- Patent number 4,483,004
- Issue date Nov 13, 1984
- Tohoku University
- Humio Inaba
- G02 - OPTICS