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Miyagi, JP
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Patents Grants
last 30 patents
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Patent Grant
Optical sensor, optical examination device, and optical property de...
Patent number
10,177,530
Issue date
Jan 8, 2019
Ricoh Company, Ltd.
Toshihiro Ishii
G01 - MEASURING TESTING
Information
Patent Grant
Sensor apparatus and image forming apparatus incorporating same
Patent number
9,429,513
Issue date
Aug 30, 2016
Ricoh Company, Ltd.
Kazuhiko Adachi
G01 - MEASURING TESTING
Information
Patent Grant
Sensor device, image forming apparatus, and control method for ligh...
Patent number
9,374,491
Issue date
Jun 21, 2016
Ricoh Company, Ltd.
Sunao Chubachi
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Automatic focus-detecting apparatus and method thereof
Patent number
6,700,618
Issue date
Mar 2, 2004
Ricoh Company, Ltd.
Sunao Chubachi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL SENSOR, OPTICAL EXAMINATION DEVICE, AND OPTICAL PROPERTY DE...
Publication number
20170179682
Publication date
Jun 22, 2017
RICOH COMPANY, LTD.
Toshihiro ISHII
G01 - MEASURING TESTING
Information
Patent Application
SENSOR DEVICE, IMAGE FORMING APPARATUS, AND CONTROL METHOD FOR LIGH...
Publication number
20150334263
Publication date
Nov 19, 2015
Sunao CHUBACHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SENSOR APPARATUS AND IMAGE FORMING APPARATUS INCORPORATING SAME
Publication number
20150062582
Publication date
Mar 5, 2015
RICOH COMPANY LTD.
Kazuhiko ADACHI
G01 - MEASURING TESTING