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Toshitaka Senma
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Yokohama, JP
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last 30 patents
Information
Patent Grant
Image forming apparatus with plural dot densities
Patent number
5,146,240
Issue date
Sep 8, 1992
Ricoh Company, Ltd.
Takamasa Hayashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Image forming apparatus capable of forming an image by dots having...
Patent number
5,144,337
Issue date
Sep 1, 1992
Ricoh Company, Ltd.
Tomoatsu Imamura
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of forming an image on both sides of a sheet
Patent number
4,975,738
Issue date
Dec 4, 1990
Ricoh Company, Ltd.
Toshitaka Senma
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Semiconductor laser unit
Patent number
4,926,433
Issue date
May 15, 1990
Ricoh Company, Ltd.
Tomoatsu Imamura
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor laser control apparatus
Patent number
4,856,008
Issue date
Aug 8, 1989
Ricoh Company, Ltd.
Toshitaka Senma
H01 - BASIC ELECTRIC ELEMENTS