Nobuyuki Kitaoka

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Nagoya-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Water-based ballpoint pen
- Patent number 8,511,926
- Issue date Aug 20, 2013
- The Pilot Ink Co., Ltd.
- Nobuyuki Kitaoka
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Water-based ink composition for ballpoint pens
- Patent number 8,403,579
- Issue date Mar 26, 2013
- The Pilot Ink Co., Ltd.
- Nobuyuki Kitaoka
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Water-based ink composition for ballpoint pen and ballpoint pen com...
- Patent number 7,441,976
- Issue date Oct 28, 2008
- The Pilot Ink Co., Ltd.
- Nobuyuki Kitaoka
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
WATER-BASED BALLPOINT PEN
- Publication number 20110013967
- Publication date Jan 20, 2011
- THE PILOT INK CO., LTD.
- Nobuyuki Kitaoka
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
WATER-BASED INK COMPOSITION FOR BALLPOINT PENS
- Publication number 20100232865
- Publication date Sep 16, 2010
- THE PILOT INK CO., LTD.
- Nobuyuki Kitaoka
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Water-based ink composition for ballpoint pen and ballpoint pen com...
- Publication number 20060088363
- Publication date Apr 27, 2006
- THE PILOT INK CO., LTD.
- Nobuyuki Kitaoka
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES