Tomoyuki AKAKI

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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
- Patent number 9,873,806
- Issue date Jan 23, 2018
- Mitsubishi Pencil Company, Limited
- Yusuke Kobayashi
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
INK COMPOSITION FOR AQUEOUS INK BALL POINT PEN
- Publication number 20150093176
- Publication date Apr 2, 2015
- MITSUBISHI PENCIL COMPANY, LIMITED
- Yusuke KOBAYASHI
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES