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Hiroshi Yaguchi
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Numazu, JP
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last 30 patents
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Patent Grant
Color toner and manufacturing method thereof and image forming meth...
Patent number
6,194,118
Issue date
Feb 27, 2001
Ricoh Company Ltd.
Satoru Miyamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color toner and manufacturing method thereof and image forming meth...
Patent number
5,998,074
Issue date
Dec 7, 1999
Ricoh Company, Ltd.
Satoru Miyamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Pulverizing apparatus
Patent number
5,975,446
Issue date
Nov 2, 1999
Ricoh Company, Ltd.
Hiroshi Yaguchi
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information
Patent Grant
Yellow toner for color electrophotography
Patent number
5,919,592
Issue date
Jul 6, 1999
Ricoh Company, Ltd.
Hiroshi Yaguchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color toner comprising two binder resins of differing softening point
Patent number
5,840,456
Issue date
Nov 24, 1998
Ricoh Company, Ltd.
Masami Tomita
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Thermosensitive recording material
Patent number
5,137,864
Issue date
Aug 11, 1992
Ricoh Company, Ltd.
Hiroshi Yaguchi
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Thermosensitive recording material
Patent number
5,102,693
Issue date
Apr 7, 1992
Ricoh Company, Ltd.
Takanori Motosugi
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Thermosensitive recording material
Patent number
4,975,408
Issue date
Dec 4, 1990
Ricoh Company, Ltd.
Takanori Motosugi
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Thermosensitive recording material
Patent number
4,939,116
Issue date
Jul 3, 1990
Ricoh Company, Ltd.
Takashi Ueda
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Thermosensitive recording material
Patent number
4,916,111
Issue date
Apr 10, 1990
Ricoh Company, Ltd.
Hiroshi Yaguchi
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Thermosensitive recording material
Patent number
4,895,828
Issue date
Jan 23, 1990
Ricoh Company, Ltd.
Hiroshi Yaguchi
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Thermosensitive recording material
Patent number
4,857,502
Issue date
Aug 15, 1989
Ricoh Company, Ltd.
Takashi Ueda
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Thermosensitive recording material
Patent number
4,798,820
Issue date
Jan 17, 1989
Ricoh Company Ltd.
Hiroshi Yaguchi
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS