Hiroshi Miyashita

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Koshigaya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Aqueous metallic ink for ball-point pen
- Patent number 5,474,603
- Issue date Dec 12, 1995
- Pentel Kabushiki Kaisha
- Hiroshi Miyashita
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Water-based ink composition for ball-point pen
- Patent number 5,062,890
- Issue date Nov 5, 1991
- Pentel Kabushiki Kaisha
- Hiroshi Miyashita
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Ball-point pen ink composition erasable by rubber eraser
- Patent number 4,357,431
- Issue date Nov 2, 1982
- Pentel Kabushiki Kaisha
- Nobuyuki Murakami
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...