Osami Yamauchi

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Aichi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Multi-refill writing instrument
- Patent number 7,946,777
- Issue date May 24, 2011
- The Pilot Ink Co., Ltd.
- Osami Yamauchi
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Penpoint assembly and writing instrument employing the same
- Patent number 5,290,117
- Issue date Mar 1, 1994
- Pilot Ink Co., Ltd.
- Takehiko Yokosuka
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Penpoint assembly and writing instrument employing the same
- Patent number 4,968,169
- Issue date Nov 6, 1990
- Pilot Ink Co., Ltd.
- Takehiko Yokosuka
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Liquid-applying tip assembly
- Patent number 4,913,175
- Issue date Apr 3, 1990
- Pilot Ink Co., Ltd.
- Takehiko Yokosuka
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Composite pen tip
- Patent number 4,410,290
- Issue date Oct 18, 1983
- Pilot Ink Co., Ltd.
- Akio Ito
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
Multi-refill writing instrument
- Publication number 20060222437
- Publication date Oct 5, 2006
- THE PILOT INK CO., LTD.
- Osami Yamauchi
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES