Keiko Nakamura

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Water base erasable ink composition for use in marking pens
- Patent number 7,396,400
- Issue date Jul 8, 2008
- Sakura Color Products Corporation
- Keiko Nakamura
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Solid drawing material and method for producing the same
- Patent number 7,291,210
- Issue date Nov 6, 2007
- Sakura Color Products Corporation
- Keiko Nakamura
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Water base erasable ink compositions
- Patent number 5,854,320
- Issue date Dec 29, 1998
- Sakura Color Products Corporation
- Keiko Nakamura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Aqueous ink compositions and methods for their production
- Patent number 5,683,500
- Issue date Nov 4, 1997
- Sakura Color Products Corporation
- Toshimitsu Kawasumi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
INK COMPOSITION FOR DETECTING PLASMA TREATMENT AND INDICATOR FOR DE...
- Publication number 20160133444
- Publication date May 12, 2016
- SAKURA COLOR PRODUCTS CORPORATION
- Seisaku Oshiro
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Solid drawing material and method for producing the same
- Publication number 20050252409
- Publication date Nov 17, 2005
- Keiko Nakamura
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Water base erasable ink composition for use in marking pens
- Publication number 20040147632
- Publication date Jul 29, 2004
- Keiko Nakamura
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...