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Atsushi Kurokawa
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Kanagawa, JP
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Patents Grants
last 30 patents
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 cartridge...
Patent number
9,864,297
Issue date
Jan 9, 2018
Ricoh Company, Ltd.
Tatsuya Ohhira
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Development device and image forming apparatus and process unit inc...
Patent number
9,008,556
Issue date
Apr 14, 2015
Ricoh Company, Ltd.
Yuuji Ishikura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
8,948,638
Issue date
Feb 3, 2015
Ricoh Company, Ltd.
Yuji Ishikura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Development device, and image forming apparatus and process cartrid...
Patent number
8,929,782
Issue date
Jan 6, 2015
Ricoh Company, Ltd.
Osamu Endou
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device, image forming apparatus, and image forming method
Patent number
8,897,681
Issue date
Nov 25, 2014
Ricoh Company, Ltd.
Tetsuro Hirota
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Development device, process cartridge incorporating same, and image...
Patent number
8,824,935
Issue date
Sep 2, 2014
Ricoh Company, Ltd.
Hideyasu Seki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Development device, process cartridge incorporating same, and image...
Patent number
8,594,540
Issue date
Nov 26, 2013
Ricoh Company, Limited
Tetsuro Hirota
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Development device, process cartridge incorporating same, and image...
Patent number
8,588,635
Issue date
Nov 19, 2013
Ricoh Company, Limited
Yoshiko Ogawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic image forming method and apparatus with a cover...
Patent number
8,483,598
Issue date
Jul 9, 2013
Ricoh Company, Limited
Shigekazu Enoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device, process cartridge, and image forming apparatus
Patent number
8,433,211
Issue date
Apr 30, 2013
Ricoh Company, Ltd.
Masanori Horike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developer bearing member and developing device with outer electrode...
Patent number
8,374,531
Issue date
Feb 12, 2013
Ricoh Company, Ltd.
Yoshinori Nakagawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
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 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
POWDER CONVEYANCE DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME
Publication number
20130266345
Publication date
Oct 10, 2013
Junichi MATSUMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS AND PROCESS UNIT INC...
Publication number
20130243499
Publication date
Sep 19, 2013
Yuuji Ishikura
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
DEVELOPMENT DEVICE, AND IMAGE FORMING APPARATUS AND PROCESS CARTRID...
Publication number
20130216277
Publication date
Aug 22, 2013
Osamu ENDOU
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
Publication number
20130071148
Publication date
Mar 21, 2013
Yuuji ISHIKURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD
Publication number
20120063797
Publication date
Mar 15, 2012
Tetsuro HIROTA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPMENT DEVICE, PROCESS CARTRIDGE INCORPORATING SAME, AND IMAGE...
Publication number
20120063815
Publication date
Mar 15, 2012
Hideyasu SEKI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS
Publication number
20120057891
Publication date
Mar 8, 2012
Yuji ISHIKURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPMENT DEVICE, PROCESS CARTRIDGE INCORPORATING SAME, AND IMAGE...
Publication number
20110182626
Publication date
Jul 28, 2011
Tetsuro HIROTA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPMENT DEVICE, PROCESS CARTRIDGE INCORPORATING SAME, AND IMAGE...
Publication number
20110164892
Publication date
Jul 7, 2011
Yoshiko OGAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
Publication number
20110064432
Publication date
Mar 17, 2011
Masanori Horike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC IMAGE FORMING METHOD AND APPARATUS
Publication number
20100278558
Publication date
Nov 4, 2010
Shigekazu ENOKI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPER BEARING MEMBER & DEVELOPING DEVICE WITH PLURAL LAYERS OF...
Publication number
20100150615
Publication date
Jun 17, 2010
Yoshinori NAKAGAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY