Yoichi Oba

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Hachioji, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for forming phosphor powder layer
- Patent number 4,420,444
- Issue date Dec 13, 1983
- Hitachi, Ltd.
- Hiromichi Yamada
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for producing pigment-coated phosphors
- Patent number 4,219,587
- Issue date Aug 26, 1980
- Hitachi, Ltd.
- Yoichi Oba
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for producing pigment-coated phosphors
- Patent number 4,206,250
- Issue date Jun 3, 1980
- Hitachi, Ltd.
- Yoichi Oba
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...