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Tsuyoshi Yoshimura
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Tokyo, JP
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last 30 patents
Information
Patent Grant
Drive apparatus for optical element array
Patent number
5,250,939
Issue date
Oct 5, 1993
Victor Company of Japan, Ltd.
Itsuo Takanashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Sheet discharging device for image forming equipment
Patent number
5,166,739
Issue date
Nov 24, 1992
Ricoh Company, Ltd.
Masanori Katsuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Digital copier operable with external storing medium
Patent number
5,105,284
Issue date
Apr 14, 1992
Ricoh Company, Ltd.
Seiji Sakata
G11 - INFORMATION STORAGE
Information
Patent Grant
Digital copier apparatus with external laser card storage medium an...
Patent number
5,016,114
Issue date
May 14, 1991
Ricoh Company, Ltd.
Seiji Sakata
G11 - INFORMATION STORAGE
Information
Patent Grant
Image forming apparatus with a document image edition function
Patent number
4,996,561
Issue date
Feb 26, 1991
Ricoh Company, Ltd.
Tsuyoshi Yoshimura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image editing method for a digital copier
Patent number
4,987,497
Issue date
Jan 22, 1991
Ricoh Company, Ltd.
Tsuyoshi Yoshimura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Digital copier having switchable pixel densities
Patent number
4,953,036
Issue date
Aug 28, 1990
Ricoh Company, Ltd.
Tsuyoshi Yoshimura
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Scanning apparatus using a rotary polygon mirror
Patent number
4,796,963
Issue date
Jan 10, 1989
Ricoh Company, Ltd.
Tsuyoshi Yoshimura
G02 - OPTICS
Information
Patent Grant
Method of changing magnification of image
Patent number
4,740,844
Issue date
Apr 26, 1988
Ricoh Company, Ltd.
Tsuyoshi Yoshimura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Portable image forming device
Patent number
4,717,965
Issue date
Jan 5, 1988
Ricoh Company, Ltd.
Harumitsu Mashiko
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Document scanning apparatus
Patent number
4,685,795
Issue date
Aug 11, 1987
Ricoh Company, Ltd.
Tsuyoshi Yoshimura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY