Masanao Yano

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Yokohama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ink composition for aqueous ink ball point pen and aqueous ink ball...
- Patent number 8,562,235
- Issue date Oct 22, 2013
- Mitsubishi Pencil Co., Ltd.
- Hideaki Toomi
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Oil-based ink composition and writing instrument using the same
- Patent number 7,417,080
- Issue date Aug 26, 2008
- Mitsubishi Pencil Co., Ltd.
- Masanao Yano
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Oil ink composition
- Patent number 5,702,512
- Issue date Dec 30, 1997
- Mitsubishi Pencil Co., Ltd.
- Masanao Yano
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
INK COMPOSITION FOR AQUEOUS INK BALL POINT PEN AND AQUEOUS INK BALL...
- Publication number 20120251222
- Publication date Oct 4, 2012
- Mitsubishi Pencil Co., Ltd.
- Hideaki Toomi
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Oil-based ink composition and writing instrument using the same
- Publication number 20050137285
- Publication date Jun 23, 2005
- Mitsubishi Pencil Co., Ltd.
- Masanao Yano
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...