Katsumi Hirano

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Kuwana, JP

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Patents Grantslast 30 patents

Information Patent Grant
Erasable black ink composition for ball-point pens
- Patent number 4,606,769
- Issue date Aug 19, 1986
- Pilot Man-Nen-Hitsu Kabushiki Kaisha
- Noriatsu Tanaka
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Aqueous ink composition for writing instruments
- Patent number 4,163,675
- Issue date Aug 7, 1979
- Pilot Ink Co., Ltd.
- Katsumi Hirano
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...