Hiroyuki KADOWAKI

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Shinjuku-ku, Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Water-based ink composition and water-based ballpoint pen
- Patent number 9,624,391
- Issue date Apr 18, 2017
- Zebra Co., Ltd.
- Hiroyuki Kadowaki
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
WATER-BASED INK COMPOSITION AND WATER-BASED BALLPOINT PEN
- Publication number 20150376423
- Publication date Dec 31, 2015
- Hiroyuki KADOWAKI
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES