Kiyoshi Iwamoto

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Water-based ink composition for ball-point pen
- Patent number 7,345,100
- Issue date Mar 18, 2008
- Mitsubishi Pencil Kabushiki Kaisha
- Kiyoshi Iwamoto
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Water-based ink composition for ballpoint pen
- Patent number 7,279,512
- Issue date Oct 9, 2007
- Mitsubishi Pencil Kabushiki Kaisha
- Kiyoshi Iwamoto
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Water-base ink having metallic lustrous color for ballpoint pen
- Patent number 6,120,590
- Issue date Sep 19, 2000
- Mitsubishi Pencil Kabushiki Kaisha
- Masaru Miyamoto
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
Aqueous ink composition for ball-point pen
- Publication number 20050143485
- Publication date Jun 30, 2005
- Kiyoshi Iwamoto
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Aqueous ink composition for ball-point pen
- Publication number 20050043439
- Publication date Feb 24, 2005
- Kiyoshi Iwamoto
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...