Hiroyuki Ito

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Fujioka-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ink composition for pressurized ball-point pen and pressurized ball...
- Patent number 7,303,350
- Issue date Dec 4, 2007
- Mitsubishi Pencil Co., Ltd.
- Masaaki Morita
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
Ink composition for pressurized ball-point pen and pressurized ball...
- Publication number 20060013641
- Publication date Jan 19, 2006
- Mitsubishi Pencil Kabushiki Kaisha
- Masaaki Morita
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES