Seiichi Oseto

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Thin film electroluminescent element
- Patent number 5,142,192
- Issue date Aug 25, 1992
- Ricoh Company, Ltd.
- Masaetsu Takahashi
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Electroluminescence multi-color display device
- Patent number 4,914,348
- Issue date Apr 3, 1990
- Ricoh Company, Ltd.
- Kenji Kameyama
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR