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Yoshiaki Miyashita
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Kawasaki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical sensor with positioning reference surface and image forming...
Patent number
8,811,846
Issue date
Aug 19, 2014
Ricoh Company, Ltd.
Akira Yoshida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and method for controlling image density
Patent number
8,503,893
Issue date
Aug 6, 2013
Ricoh Company, Ltd.
Akira Yoshida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Optical sensor and image forming apparatus
Patent number
8,455,851
Issue date
Jun 4, 2013
Ricoh Company, Limited
Kayoko Tanaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and image-density control method
Patent number
8,233,813
Issue date
Jul 31, 2012
Ricoh Company, Limited
Akira Yoshida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process cartridge including developing unit and incorporated in ima...
Patent number
8,145,100
Issue date
Mar 27, 2012
Ricoh Company, Ltd.
Yushi Hirayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and image density control method
Patent number
8,045,874
Issue date
Oct 25, 2011
Ricoh Company Limited
Akira Yoshida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having an imaging condition setting control
Patent number
7,711,275
Issue date
May 4, 2010
Ricoh Company, Ltd.
Yoshiaki Miyashita
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus for adjusting predetermined developer densi...
Patent number
6,850,718
Issue date
Feb 1, 2005
Ricoh Company, Ltd.
Yoshiaki Miyashita
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for removing image forming substance from imag...
Patent number
RE37645
Issue date
Apr 9, 2002
Ricoh Company, Ltd.
Yasuhiro Takahashi
399 - Electrophotography
Information
Patent Grant
Method and apparatus for regenerating image holding member
Patent number
RE36963
Issue date
Nov 21, 2000
Ricoh Company, Ltd.
Kazuhiro Ando
430 - Radiation imagery chemistry: process, composition, or product thereof
Information
Patent Grant
Method and apparatus for removing image forming substance from imag...
Patent number
6,095,164
Issue date
Aug 1, 2000
Ricoh Company, Ltd.
Masatoshi Saitoh
B08 - CLEANING
Information
Patent Grant
Method for repeatedly using image holding member
Patent number
6,047,758
Issue date
Apr 11, 2000
Ricoh Company, Ltd.
Shinichi Kuramoto
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Method for repeatedly using image holding member
Patent number
5,753,400
Issue date
May 19, 1998
Ricoh Company, Ltd.
Shinichi Kuramoto
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Method and apparatus for regenerating image holding member
Patent number
5,605,777
Issue date
Feb 25, 1997
Ricoh Company, Ltd.
Kazuhiro Ando
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Image forming apparatus with a contact member contacting an image c...
Patent number
5,585,896
Issue date
Dec 17, 1996
Ricoh Company, Ltd.
Kouichi Yamazaki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for removing image forming substance from imag...
Patent number
5,574,538
Issue date
Nov 12, 1996
Ricoh Company, Ltd.
Yasuhiro Takahashi
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Method of and system for cleaning a charge inducing member
Patent number
5,572,293
Issue date
Nov 5, 1996
Ricoh Company, Ltd.
Nobuo Kikuchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning system for charging drum of an image forming apparatus
Patent number
5,557,373
Issue date
Sep 17, 1996
Ricoh Company, Ltd.
Yoshiaki Miyashita
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method for using image support regeneratively and tool for forming...
Patent number
5,547,793
Issue date
Aug 20, 1996
Ricoh Company, Ltd.
Shinichi Kuramoto
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Toner used in an image forming apparatus
Patent number
5,512,708
Issue date
Apr 30, 1996
Ricoh Company, Ltd.
Sadao Takahashi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
Optical sensor and image forming apparatus incorporating optical se...
Publication number
20110200349
Publication date
Aug 18, 2011
RICOH COMPANY, LTD.
Akira Yoshida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
OPTICAL SENSOR AND IMAGE FORMING APPARATUS
Publication number
20110052239
Publication date
Mar 3, 2011
Kayoko Tanaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS AND METHOD FOR CONTROLLING IMAGE DENSITY TH...
Publication number
20100226664
Publication date
Sep 9, 2010
Akira YOSHIDA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS AND IMAGE-DENSITY CONTROL METHOD
Publication number
20090324267
Publication date
Dec 31, 2009
Akira YOSHIDA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS AND IMAGE DENSITY CONTROL METHOD
Publication number
20090202263
Publication date
Aug 13, 2009
Akira YOSHIDA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PROCESS CARTRIDGE INCLUDING DEVELOPING UNIT AND INCORPORATED IN IMA...
Publication number
20090190960
Publication date
Jul 30, 2009
Yushi Hirayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS
Publication number
20070147868
Publication date
Jun 28, 2007
Yoshiaki Miyashita
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus
Publication number
20020172523
Publication date
Nov 21, 2002
Yoshiaki Miyashita
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY