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Patents Grants
last 30 patents
Information
Patent Grant
Photoconductor, image forming apparatus, and process cartridge
Patent number
10,209,639
Issue date
Feb 19, 2019
Ricoh Company, Ltd.
Tomoharu Asano
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoconductor, image forming apparatus, and pr...
Patent number
10,191,398
Issue date
Jan 29, 2019
Ricoh Company, Ltd.
Toshihiro Ishida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photoconductor, image forming apparatus, and process cartridge
Patent number
10,114,302
Issue date
Oct 30, 2018
Ricoh Company, Ltd.
Ryohta Takahashi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photoconductor, image forming apparatus, and process cartridge
Patent number
9,846,377
Issue date
Dec 19, 2017
Ricoh Company, Ltd.
Tomoharu Asano
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photoconductor, image forming apparatus, and process cartridge
Patent number
9,766,562
Issue date
Sep 19, 2017
Ricoh Company, Ltd.
Toshihiro Ishida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photoconductor, electrophotographic method, electrophotographic app...
Patent number
9,753,384
Issue date
Sep 5, 2017
Ricoh Company, Ltd.
Eiji Kurimoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoconductor, image forming apparatus, and pr...
Patent number
9,678,446
Issue date
Jun 13, 2017
Ricoh Company, Ltd.
Toshihiro Ishida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoconductor, image forming apparatus, and pr...
Patent number
9,671,706
Issue date
Jun 6, 2017
Ricoh Company, Ltd.
Daisuke Nii
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoreceptor, image forming apparatus, and pro...
Patent number
9,599,916
Issue date
Mar 21, 2017
Ricoh Company, Ltd.
Tomoharu Asano
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoconductor, and image forming method, image...
Patent number
9,291,924
Issue date
Mar 22, 2016
Ricoh Company, Ltd.
Eiji Kurimoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image bearing member, manufacturing method of the same, image formi...
Patent number
9,201,319
Issue date
Dec 1, 2015
Ricoh Company, Ltd.
Kazukiyo Nagai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoreceptor, and image forming method, image...
Patent number
8,835,084
Issue date
Sep 16, 2014
Ricoh Company, Ltd.
Kazukiyo Nagai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoconductor, image forming apparatus, and pr...
Patent number
8,771,909
Issue date
Jul 8, 2014
Ricoh Company, Ltd.
Yuusuke Koizuka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photoreceptor and image forming method, image forming apparatus, an...
Patent number
8,679,712
Issue date
Mar 25, 2014
Ricoh Company, Ltd.
Yuuji Tanaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoreceptor, and image forming method and app...
Patent number
8,669,030
Issue date
Mar 11, 2014
Ricoh Company, Limited
Yukio Fujiwara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Furan derivative and electrophotographic photoconductor
Patent number
8,652,713
Issue date
Feb 18, 2014
Ricoh Company, Ltd.
Hongguo Li
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Acrylic ester compound and manufacturing intermediate thereof, meth...
Patent number
8,623,577
Issue date
Jan 7, 2014
Ricoh Company, Ltd.
Tamotsu Horiuchi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Electrophotographic photoconductor, production method thereof, imag...
Patent number
8,197,997
Issue date
Jun 12, 2012
Ricoh Company, Ltd.
Yoshiki Yanagawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoconductor, and image forming apparatus and...
Patent number
8,192,904
Issue date
Jun 5, 2012
Ricoh Company, Ltd.
Kazukiyo Nagai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Recombinant human hepatitis C virus-like particle and method for pr...
Patent number
8,183,044
Issue date
May 22, 2012
Japan as represented by Director-General of National Institute of Infectious...
Jun-ichi Tanabe
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Image bearing member, process cartridge, image forming apparatus an...
Patent number
8,148,038
Issue date
Apr 3, 2012
Ricoh Company, Ltd.
Yukio Fujiwara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
High production system for infectious hepatitis C virus particle
Patent number
8,143,022
Issue date
Mar 27, 2012
Tokyo Metropolitan Institute of Medical Science
Jun-ichi Tanabe
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Electrophotographic photoreceptor, and process cartridge and image...
Patent number
8,119,317
Issue date
Feb 21, 2012
Ricoh Company, Ltd.
Hidetoshi Kami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoconductor, electrophotographic process car...
Patent number
8,084,170
Issue date
Dec 27, 2011
Ricoh Company, Ltd.
Hidetoshi Kami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image bearing member, image forming apparatus and process cartridge
Patent number
8,043,773
Issue date
Oct 25, 2011
Ricoh Company, Limited
Hiroshi Ikuno
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoconductor, process cartridge, and image fo...
Patent number
8,043,777
Issue date
Oct 25, 2011
Ricoh Company, Ltd.
Hidetoshi Kami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image bearing member, image forming method, and image forming appar...
Patent number
7,914,959
Issue date
Mar 29, 2011
Ricoh Company, Limited
Yoshinori Inaba
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image bearing member and image forming method using thereof, and im...
Patent number
7,862,969
Issue date
Jan 4, 2011
Ricoh Company, Ltd.
Yasuo Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoconductor, image forming method, image for...
Patent number
7,838,188
Issue date
Nov 23, 2010
Ricoh Company, Ltd.
Nobuya Mori
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image bearing member, and image forming apparatus and process cartr...
Patent number
7,718,335
Issue date
May 18, 2010
Ricoh Company Limited
Yukio Fujiwara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE
Publication number
20170343908
Publication date
Nov 30, 2017
Ryohta TAKAHASHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, AND PR...
Publication number
20170343910
Publication date
Nov 30, 2017
Toshihiro ISHIDA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE
Publication number
20170307988
Publication date
Oct 26, 2017
Tomoharu ASANO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE
Publication number
20170153559
Publication date
Jun 1, 2017
Tomoharu ASANO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE
Publication number
20160334720
Publication date
Nov 17, 2016
Toshihiro ISHIDA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PHOTOCONDUCTOR, ELECTROPHOTOGRAPHIC METHOD, ELECTROPHOTOGRAPHIC APP...
Publication number
20160327877
Publication date
Nov 10, 2016
Eiji KURIMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING APPARATUS, AND PRO...
Publication number
20160161871
Publication date
Jun 9, 2016
Tomoharu ASANO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, AND PR...
Publication number
20160139517
Publication date
May 19, 2016
Toshihiro ISHIDA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, AND PR...
Publication number
20150309430
Publication date
Oct 29, 2015
Daisuke NII
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, AND IMAGE FORMING METHOD, IMAGE...
Publication number
20150168856
Publication date
Jun 18, 2015
Eiji KURIMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE BEARING MEMBER, MANUFACTURING METHOD OF THE SAME, IMAGE FORMI...
Publication number
20140178810
Publication date
Jun 26, 2014
Kazukiyo Nagai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING METHOD, IMAGE FOR...
Publication number
20130295497
Publication date
Nov 7, 2013
Yuuji TANAKA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, AND IMAGE FORMING METHOD, IMAGE...
Publication number
20130295496
Publication date
Nov 7, 2013
Yuuji TANAKA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, AND PR...
Publication number
20130122409
Publication date
May 16, 2013
Yuusuke KOIZUKA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, AND IMAGE FORMING METHOD, IMAGE...
Publication number
20130122410
Publication date
May 16, 2013
Kazukiyo NAGAI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PHOTORECEPTOR AND IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, AN...
Publication number
20130022903
Publication date
Jan 24, 2013
Yuuji TANAKA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
FURAN DERIVATIVE AND ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR
Publication number
20120171601
Publication date
Jul 5, 2012
RICOH COMPANY, LTD.
Hongguo Li
C07 - ORGANIC CHEMISTRY
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTORECEPTOR, AND IMAGE FORMING METHOD, IMAGE...
Publication number
20120087695
Publication date
Apr 12, 2012
Kazukiyo NAGAI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING METHOD, IMAGE FORM...
Publication number
20120028179
Publication date
Feb 2, 2012
Hongguo LI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE BEARING MEMBER AND IMAGE FORMING METHOD, IMAGE FORMING APPARA...
Publication number
20120021346
Publication date
Jan 26, 2012
Norio Nagayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ACRYLIC ESTER COMPOUND AND MANUFACTURING INTERMEDIATE THEREOF, METH...
Publication number
20110287353
Publication date
Nov 24, 2011
Tamotsu HORIUCHI
C07 - ORGANIC CHEMISTRY
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING METHOD, IMAGE FOR...
Publication number
20110200926
Publication date
Aug 18, 2011
RICOH COMPANY, LTD.
Yuuji TANAKA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC POHOTORECEPTOR, IMAGE FORMING METHOD, IMAGE FOR...
Publication number
20110065032
Publication date
Mar 17, 2011
RICOH COMPANY , LTD.
Kazukiyo NAGAI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ANTIBODY HAVING INHIBITORY ACTIVITY ON INFECTION WITH HEPATITIS C V...
Publication number
20100291545
Publication date
Nov 18, 2010
Takaji Wakita
C07 - ORGANIC CHEMISTRY
Information
Patent Application
PRODUCTION AND USE OF EPITOPE-TAGGED HEPATITIS C VIRUS PARTICLE
Publication number
20100278865
Publication date
Nov 4, 2010
Takaji Wakita
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND METHOD OF PREPARING THE PHOTO...
Publication number
20100209842
Publication date
Aug 19, 2010
Yoshiki Yanagawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
High Production System for Infectious Hepatitis C Virus Particle
Publication number
20100035345
Publication date
Feb 11, 2010
Japan As Represented by Director-General of Nation al Of Infectious Diseases
Jun-ichi Tanabe
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Application
Novel Recombinant Human Hepatitis C Virus-Like Particle and Method...
Publication number
20090221028
Publication date
Sep 3, 2009
Jun-ichi Tanabe
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Application
IMAGE BEARING MEMBER, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS AN...
Publication number
20090148180
Publication date
Jun 11, 2009
Yukio Fujiwara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, PROCESS CARTRIDGE, AND IMAGE FO...
Publication number
20090067891
Publication date
Mar 12, 2009
RICOH COMPANY, LTD.
Hidetoshi Kami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY