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Shuuji Ichikawa
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Yokohama-shi, JP
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Patents Grants
last 30 patents
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Patent Grant
Oil-based ink composition and uses thereof
Patent number
7,381,754
Issue date
Jun 3, 2008
Mitsubishi Pencil Co., Ltd.
Shuuji Ichikawa
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Oil-base ink composition, writing utensils and dyes to be used therein
Patent number
6,830,611
Issue date
Dec 14, 2004
Mitsubishi Pencil Co., Ltd.
Shuuji Ichikawa
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Ink follower composition for oil-based ballpoint pens
Patent number
6,530,708
Issue date
Mar 11, 2003
Mitsubishi Pencil Co., Ltd.
Shuuji Ichikawa
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Patents Applications
last 30 patents
Information
Patent Application
Oil-based ink composition and uses thereof
Publication number
20030134937
Publication date
Jul 17, 2003
MITSUBISHI PENCIL CO., LTD.
Shuuji Ichikawa
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
Oil-base ink composition, writing utensils and dyes to be used therein
Publication number
20030075074
Publication date
Apr 24, 2003
Shuuji Ichikawa
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
Ink follower composition for oil-based ballpoint pens
Publication number
20020159821
Publication date
Oct 31, 2002
MITSUBISHI PENCIL CO., LTD.
Shuuji Ichikawa
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES