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Keiichi YOSHIDA
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Pen holder and display system
Patent number
11,650,679
Issue date
May 16, 2023
Ricoh Company, Ltd.
Akihisa Mikawa
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Abnormality detection device and image forming apparatus
Patent number
10,684,583
Issue date
Jun 16, 2020
Ricoh Company, Ltd.
Shogo Nakamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device, and image forming apparatus and process cartridg...
Patent number
10,295,931
Issue date
May 21, 2019
Ricoh Company, Ltd.
Shinji Tamaki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Vertical biaxial developing device and image forming apparatus and...
Patent number
10,209,645
Issue date
Feb 19, 2019
Ricoh Company, Ltd.
Yuuki Tsuchiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device and image forming apparatus and process cartridge...
Patent number
10,168,642
Issue date
Jan 1, 2019
Ricoh Company, Ltd.
Tatsuya Ohhira
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device with casing having upper and lower compartments
Patent number
10,114,334
Issue date
Oct 30, 2018
Ricoh Company, Ltd.
Tatsuya Ohhira
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device, and image forming apparatus and process cartridg...
Patent number
10,088,776
Issue date
Oct 2, 2018
Ricoh Company, Ltd.
Hiroshi Hosokawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device, and image forming apparatus and process cartridg...
Patent number
10,031,441
Issue date
Jul 24, 2018
Ricoh Company, Ltd.
Keiichi Yoshida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device and image forming apparatus and process cartridge...
Patent number
9,864,297
Issue date
Jan 9, 2018
Ricoh Company, Ltd.
Tatsuya Ohhira
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Powder container, toner cartridge, drawer tray, and image forming a...
Patent number
9,057,984
Issue date
Jun 16, 2015
Ricoh Company, Limited
Keiichi Yoshida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Powder container, powder conveying apparatus, and image forming app...
Patent number
8,953,986
Issue date
Feb 10, 2015
Ricoh Company, Limited
Keiichi Yoshida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Powder conveying apparatus, image forming apparatus, and powder con...
Patent number
8,849,163
Issue date
Sep 30, 2014
Ricoh Company, Limited
Hiroshi Ikeguchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Powder container, powder conveying apparatus, and image forming app...
Patent number
8,781,375
Issue date
Jul 15, 2014
Ricoh Company, Limited
Keiichi Yoshida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device, process cartridge, and image forming apparatus
Patent number
8,326,189
Issue date
Dec 4, 2012
Ricoh Company, Limited
Yoshiyuki Fukuda
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
Development device, process cartridge, and image forming apparatus
Patent number
8,023,855
Issue date
Sep 20, 2011
Ricoh Company Limited
Yoshio Hattori
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus, lubricant applying device, transfer device...
Patent number
7,826,786
Issue date
Nov 2, 2010
Ricoh Company, Limited
Takeo Suda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developer bearing member, developing device, process cartridge and...
Patent number
7,599,650
Issue date
Oct 6, 2009
Ricoh Company Limited
Shunji Katoh
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Charging device having a first and second pressure with a cleaning...
Patent number
7,463,845
Issue date
Dec 9, 2008
Ricoh Company Limited
Takeo Suda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having a developer conveying system and ass...
Patent number
7,463,852
Issue date
Dec 9, 2008
Ricoh Company, Ltd.
Keiichi Yoshida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for image forming capable of effectively trans...
Patent number
7,315,723
Issue date
Jan 1, 2008
Ricoh Co., Ltd.
Takeo Suda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for image forming capable of using minuscule s...
Patent number
7,209,698
Issue date
Apr 24, 2007
Ricoh Company, Ltd.
Takaaki Tawada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
PEN HOLDER AND DISPLAY SYSTEM
Publication number
20220397965
Publication date
Dec 15, 2022
RICOH COMPANY, LTD.
Akihisa Mikawa
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
ABNORMALITY DETECTION DEVICE AND IMAGE FORMING APPARATUS
Publication number
20190265626
Publication date
Aug 29, 2019
RICOH COMPANY, LTD.
Shogo NAKAMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDG...
Publication number
20190033749
Publication date
Jan 31, 2019
RICOH COMPANY, LTD.
Shinji TAMAKI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE...
Publication number
20180143568
Publication date
May 24, 2018
RICOH COMPANY, LTD.
Tatsuya OHHIRA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE...
Publication number
20180136586
Publication date
May 17, 2018
RICOH COMPANY, LTD.
Yuuki TSUCHIYA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE...
Publication number
20170293257
Publication date
Oct 12, 2017
Tatsuya OHHIRA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS I...
Publication number
20170160675
Publication date
Jun 8, 2017
RICOH COMPANY, LTD.
Ichiro KADOTA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDG...
Publication number
20170115605
Publication date
Apr 27, 2017
RICOH COMPANY, LTD.
Keiichi YOSHIDA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDG...
Publication number
20170115604
Publication date
Apr 27, 2017
RICOH COMPANY, LTD.
Hiroshi HOSOKAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE...
Publication number
20170090342
Publication date
Mar 30, 2017
Tatsuya OHHIRA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
Publication number
20130216250
Publication date
Aug 22, 2013
Hideyasu SEKI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
POWDER CONTAINER, POWDER CONVEYING APPARATUS, AND IMAGE FORMING APP...
Publication number
20130039678
Publication date
Feb 14, 2013
Keiichi YOSHIDA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
POWDER CONTAINER, TONER CARTRIDGE, DRAWER TRAY, AND IMAGE FORMING A...
Publication number
20120219318
Publication date
Aug 30, 2012
Keiichi Yoshida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
POWDER CONVEYING APPARATUS, IMAGE FORMING APPARATUS, AND POWDER CON...
Publication number
20120177414
Publication date
Jul 12, 2012
Hiroshi Ikeguchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
POWDER CONTAINER, POWDER CONVEYING APPARATUS, AND IMAGE FORMING APP...
Publication number
20120099902
Publication date
Apr 26, 2012
Keiichi YOSHIDA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
Publication number
20110058858
Publication date
Mar 10, 2011
Yoshiyuki Fukuda
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
DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
Publication number
20090136257
Publication date
May 28, 2009
Yoshio Hattori
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus, lubricant applying device, transfer device...
Publication number
20070183824
Publication date
Aug 9, 2007
Takeo Suda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPER BEARING MEMBER, DEVELOPING DEVICE, PROCESS CARTRIDGE AND...
Publication number
20070104516
Publication date
May 10, 2007
Shunji KATOH
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus having a developer conveying system and ass...
Publication number
20070081832
Publication date
Apr 12, 2007
Keiichi Yoshida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Charging device, and process cartridge and image forming apparatus...
Publication number
20060067727
Publication date
Mar 30, 2006
Takeo Suda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Method and apparatus for image forming capable of effectively trans...
Publication number
20050249533
Publication date
Nov 10, 2005
Takeo Suda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Method and apparatus for image forming capable of using minuscule s...
Publication number
20050152722
Publication date
Jul 14, 2005
Takaaki Tawada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY