Nobuo Matsubara

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Aichi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ballpoint pen tip, manufacturing method therefor, and ballpoint pen...
- Patent number 5,904,432
- Issue date May 18, 1999
- The Pilot Ink Co., Ltd.
- Masashi Ando
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Ballpoint pen tip
- Patent number 5,899,625
- Issue date May 4, 1999
- The Pilot Ink Co., Ltd.
- Masashi Ando
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Aqueous ink composition for writing instrument
- Patent number 5,466,283
- Issue date Nov 14, 1995
- Pilot Ink Co., Ltd.
- Masahiro Kondo
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...