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Tadashi Kamagata
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Yokohama-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Water-based ink composition for writing utensil
Patent number
6,776,829
Issue date
Aug 17, 2004
Mitsubishi Pencil Kabushiki Kaisha
Masaru Miyamoto
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Water-based ink composition for writing instrument
Patent number
6,599,352
Issue date
Jul 29, 2003
Mitsubishi Pencil Kabushiki Kaisha
Masaru Miyamoto
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Water based ink composition for writing instrument
Patent number
6,554,890
Issue date
Apr 29, 2003
Mitsubishi Pencil Kabushiki Kaisha
Masaru Miyamoto
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Water based white color tone pigment ink for ball point pen
Patent number
6,492,435
Issue date
Dec 10, 2002
Mitsubishi Pencil Kabushiki Kaisha
Masaru Miyamoto
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Water based ink composition for writing instrument
Patent number
6,491,747
Issue date
Dec 10, 2002
Mitsubishi Pencil Kabushiki Kaisha
Masaru Miyamoto
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Water based ink composition for writing instrument
Patent number
6,471,759
Issue date
Oct 29, 2002
Mitsubishi Pencil Kabushiki Kaisha
Masaru Miyamoto
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Water based ink composition for ball point pen
Patent number
6,451,099
Issue date
Sep 17, 2002
Mitsubishi Pencil Kabushiki Kaisha
Masaru Miyamoto
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Method for manufacturing ink follower for water base ballpoint pens
Patent number
6,391,927
Issue date
May 21, 2002
Mitsubishi Pencil Kabushikikaisha
Norio Ogura
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information
Patent Grant
Ink follower for water-base ballpoint pens and method of manufactur...
Patent number
6,376,560
Issue date
Apr 23, 2002
Mitsubishi Pencil Kabushikikaisha
Norio Ogura
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information
Patent Grant
Water-base white pigment ink for ballpoints
Patent number
6,312,510
Issue date
Nov 6, 2001
Mitsubishi Pencil Kabushiki Kaisha
Tadashi Kamagata
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Method of manufacturing ink follower for water-base ballpoint pens
Patent number
6,227,738
Issue date
May 8, 2001
Mitsubishi Pencil Kabushikikaisha
Norio Ogura
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Patents Applications
last 30 patents
Information
Patent Application
COLORING COMPOSITION AND COLORING METHOD
Publication number
20110297305
Publication date
Dec 8, 2011
Mitsubishi Pencil Co., Ltd.
Masaru Miyamoto
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Application
COLORING COMPOSITION FOR PREVENTING SEE-THROUGH OF CLOTH, COLORING...
Publication number
20100297901
Publication date
Nov 25, 2010
MITSUBISHI PENCIL COMPANY, LIMITED
Takayuki Ikai
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Application
COLORING COMPOSITION AND COLORING METHOD
Publication number
20090049625
Publication date
Feb 26, 2009
Mitsubishi Pencil Co., Ltd.
Masaru Miyamoto
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Application
Water-based ink composition for writing utensil
Publication number
20030196568
Publication date
Oct 23, 2003
Masaru Miyamoto
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
Water based ink composition for writing instrument
Publication number
20020011180
Publication date
Jan 31, 2002
Mitsubishi Pencil Kabushiki Kaisha
Masaru Miyamoto
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
Water based ink composition for writing instrument
Publication number
20020007763
Publication date
Jan 24, 2002
Mitsubishi Pencil Kabushiki Kaisha
Masaru Miyamoto
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
Water based ink composition for writing instrument
Publication number
20010017096
Publication date
Aug 30, 2001
Mitsubishi Pencil Kabushiki Kaisha
Masaru Miyamoto
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...