Koji Kawashima

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Wakayama-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Water-resistant ink composition and writing instrument
- Patent number 5,935,311
- Issue date Aug 10, 1999
- Shin-Etsu Chemical Co., Ltd.
- Kazuyuki Matsumura
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...