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Koichi Hirano
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Ball-point pen
Patent number
7,641,412
Issue date
Jan 5, 2010
Mitsubishi Pencil Co., Ltd.
Koichi Hirano
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information
Patent Grant
Process for producing self-inking stamp and self-inking stamp
Patent number
6,289,806
Issue date
Sep 18, 2001
Mitsubishi Pencil Kabushiki Kaisha
Koichi Hirano
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Method of producing an impregnation stamp and an impregnation stamp...
Patent number
5,979,323
Issue date
Nov 9, 1999
Mitsubishi Pencil Kabushiki Kaisha
Koichi Hirano
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Process for preparing stamp
Patent number
5,878,668
Issue date
Mar 9, 1999
Mitsubishi Pencil Kabushiki Kaisha
Yoichi Ando
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Process for preparing stamp
Patent number
5,741,459
Issue date
Apr 21, 1998
Mitsubishi Pencil Kabushiki Kaisha
Yoichi Ando
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method for preparing a thermosensitive stencil with a thermal label...
Patent number
5,669,299
Issue date
Sep 23, 1997
Mitsubishi Pencil Kabushiki Kaisha
Yoichi Ando
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Process of producing a printing plate for a stamp
Patent number
5,611,279
Issue date
Mar 18, 1997
Mitsubishi Pencil Kabushiki Kaisha
Yoichi Ando
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Patents Applications
last 30 patents
Information
Patent Application
Ball-point pen
Publication number
20070183837
Publication date
Aug 9, 2007
Mitsubishi Pencil Co., Ltd.
Koichi Hirano
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information
Patent Application
PROCESS FOR PRODUCING SELF-INKING STAMP AND SELF-INKING STAMP
Publication number
20010013293
Publication date
Aug 16, 2001
Mitsubishi Pencil Kabushiki Kaisha
KOICHI HIRANO
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS