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Masamitsu Takahashi
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Shijonawate-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Oil-based pigment ink composition and oil-based pigment ink writing...
Patent number
9,683,118
Issue date
Jun 20, 2017
Sakura Color Products Corporation
Hidetoshi Fukuo
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information
Patent Grant
Crayon
Patent number
8,431,632
Issue date
Apr 30, 2013
Sakura Color Products Corporation
Kotaro Sumitomo
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Crayon and process for producing the same
Patent number
8,299,143
Issue date
Oct 30, 2012
Sakura Color Products Corporation
Kotaro Sumitomo
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Crayon and process for producing the same
Patent number
8,242,190
Issue date
Aug 14, 2012
Sakura Color Products Corporation
Kotaro Sumitomo
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Process for production of black crayon
Patent number
7,943,684
Issue date
May 17, 2011
Sakura Color Products Corporation
Kotaro Sumitomo
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information
Patent Grant
Photostorage solid drawing medium
Patent number
7,485,406
Issue date
Feb 3, 2009
Sakura Color Products Corporation
Hidetoshi Fukuo
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Patents Applications
last 30 patents
Information
Patent Application
OIL-BASED PIGMENT INK COMPOSITION AND OIL-BASED PIGMENT INK WRITING...
Publication number
20160075893
Publication date
Mar 17, 2016
SAKURA COLOR PRODUCTS CORPORATION
Hidetoshi FUKUO
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information
Patent Application
CRAYON
Publication number
20100273914
Publication date
Oct 28, 2010
SAKURA COLOR PRODUCTS CORPORATION
Kotaro Sumitomo
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
CRAYON AND PROCESS FOR PRODUCING THE SAME
Publication number
20100016471
Publication date
Jan 21, 2010
SAKURA COLOR PRODUCTS CORPORATION
Kotaro Sumitomo
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
CRAYON AND PROCESS FOR PRODUCING THE SAME
Publication number
20090326096
Publication date
Dec 31, 2009
Sakura Color Products Corporation
Kotaro Sumitomo
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
PROCESS FOR PRODUCTION OF BLACK CRAYON
Publication number
20090247668
Publication date
Oct 1, 2009
Kotaro Sumitomo
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information
Patent Application
CRAYON
Publication number
20090209678
Publication date
Aug 20, 2009
SAKURA COLOR PRODUCTS CORPORATION
Kotaro Sumitomo
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information
Patent Application
Photostorage solid drawing medium
Publication number
20060210924
Publication date
Sep 21, 2006
Hidetoshi Fukuo
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
Photostorage solid drawing medium
Publication number
20050197423
Publication date
Sep 8, 2005
Hidetoshi Fukuo
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES