Yoshitaka Fujinuma

Person

Hitachinaka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Developing device, process cartridge, image forming apparatus, and...
- Patent number 8,620,194
- Issue date Dec 31, 2013
- Ricoh Company, Ltd.
- Susumu Tateyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process cartridge, and image forming apparatus t...
- Patent number 8,374,528
- Issue date Feb 12, 2013
- Ricoh Company, Ltd.
- Tatsuya Kubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image forming apparatus that include a develo...
- Patent number 8,346,134
- Issue date Jan 1, 2013
- Ricoh Company, Ltd.
- Masayoshi Nakayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process cartridge, image forming apparatus and d...
- Patent number 8,145,102
- Issue date Mar 27, 2012
- Ricoh Company, Ltd.
- Susumu Tateyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image forming apparatus including inclined tr...
- Patent number 8,045,893
- Issue date Oct 25, 2011
- Ricoh Company, Ltd.
- Masayoshi Nakayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process cartridge, and image forming apparatus t...
- Patent number 8,045,900
- Issue date Oct 25, 2011
- Ricoh Company, Ltd.
- Tatsuya Kubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development apparatus having two developer bearers and two developm...
- Patent number 8,041,269
- Issue date Oct 18, 2011
- Ricoh Co., Ltd.
- Tatsuya Kubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process cartridge, and image forming apparatus h...
- Patent number 8,027,623
- Issue date Sep 27, 2011
- Ricoh Company, Ltd.
- Kentarou Nodera
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process cartridge, and image forming apparatus
- Patent number 8,014,706
- Issue date Sep 6, 2011
- Ricoh Company, Ltd.
- Masayoshi Nakayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image forming apparatus equipped with the same
- Patent number 8,010,020
- Issue date Aug 30, 2011
- Ricoh Company, Ltd.
- Emi Kita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing unit, process cartridge, and image forming apparatus hav...
- Patent number 7,904,001
- Issue date Mar 8, 2011
- Ricoh Company, Ltd.
- Susumu Tateyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image forming apparatus
- Patent number 7,826,775
- Issue date Nov 2, 2010
- Ricoh Company, Ltd.
- Masayoshi Nakayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and developing device
- Patent number 7,792,466
- Issue date Sep 7, 2010
- Ricoh Company, Ltd.
- Masayoshi Nakayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process cartridge, and image forming apparatus
- Patent number 7,792,465
- Issue date Sep 7, 2010
- Ricoh Company, Ltd.
- Tatsuya Kubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus having a force-converting mechanism to deta...
- Patent number 7,616,915
- Issue date Nov 10, 2009
- Ricoh Company Ltd.
- Kazuhiro Shimojima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device in image-forming device
- Patent number 7,580,657
- Issue date Aug 25, 2009
- Ricoh Company, Ltd.
- Susumu Tateyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device including heating roller and pressure roller
- Patent number 7,324,778
- Issue date Jan 29, 2008
- Ricoh Printing Systems, Ltd.
- Takashi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning device for image forming apparatus
- Patent number 7,272,355
- Issue date Sep 18, 2007
- Ricoh Printing Systems, Ltd.
- Takashi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 7,079,804
- Issue date Jul 18, 2006
- Ricoh Printing Systems, Ltd.
- Hideki Ando
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 7,010,242
- Issue date Mar 7, 2006
- Ricoh Printing Systems, Inc.
- Takashi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device
- Patent number D467265
- Issue date Dec 17, 2002
- Hitachi Koki Co., Ltd.
- Takashi Suzuki
- D18 - Printing and office machinery
Information Patent Grant
Developer bottle
- Patent number D463818
- Issue date Oct 1, 2002
- Hitachi Koki Co., Ltd.
- Yoshitaka Fujinuma
- D18 - Printing and office machinery
Information Patent Grant
Corona discharging apparatus for use in electrophotographic printin...
- Patent number 6,415,120
- Issue date Jul 2, 2002
- Hitachi Koki Co., Ltd.
- Hajime Tashiro
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner cartridge
- Patent number 6,341,210
- Issue date Jan 22, 2002
- Hitachi Koki Co., Ltd.
- Kenji Nozawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing system having a plurality of developing rollers with opp...
- Patent number 6,330,414
- Issue date Dec 11, 2001
- Hitachi Koki Co., Ltd.
- Yasuo Takuma
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device
- Patent number 6,285,846
- Issue date Sep 4, 2001
- Hitachi Koki Co., Ltd.
- Takashi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Imaging forming apparatus having a toner exhausting device
- Patent number 6,259,883
- Issue date Jul 10, 2001
- Hitachi Koki Co., Ltd.
- Hiroshi Tsunoda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner bottle cap
- Patent number D441011
- Issue date Apr 24, 2001
- Hitachi Koki Co., Ltd.
- Kenji Nozawa
- D18 - Printing and office machinery
Information Patent Grant
Photosensitive drum for printer
- Patent number D438892
- Issue date Mar 13, 2001
- Hitachi Koki Co., Ltd.
- Yuichiro Suzuki
- D18 - Printing and office machinery
Information Patent Grant
Electrophotographic apparatus
- Patent number 5,923,933
- Issue date Jul 13, 1999
- Hitachi Koki Co., Ltd.
- Masayasu Anzai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND...
- Publication number 20120163875
- Publication date Jun 28, 2012
- Susumu Tateyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS T...
- Publication number 20120039627
- Publication date Feb 16, 2012
- Tatsuya Kubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20090103954
- Publication date Apr 23, 2009
- Masayoshi Nakayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20090097878
- Publication date Apr 16, 2009
- Tatsuya Kubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20090067878
- Publication date Mar 12, 2009
- Susumu Tateyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20090067886
- Publication date Mar 12, 2009
- Kentarou NODERA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20080253810
- Publication date Oct 16, 2008
- Susumu Tateyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20080247786
- Publication date Oct 9, 2008
- Masayoshi Nakayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS EQUIPPED WITH THE SAME
- Publication number 20080240792
- Publication date Oct 2, 2008
- Emi Kita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20080213006
- Publication date Sep 4, 2008
- Masayoshi Nakayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20080199205
- Publication date Aug 21, 2008
- Tatsuya KUBO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING UNIT, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20080199223
- Publication date Aug 21, 2008
- Susumu Tateyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20080101818
- Publication date May 1, 2008
- Kazuhiro Shimojima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPMENT APPARATUS AND IMAGE FORMING APPARATUS
- Publication number 20070280744
- Publication date Dec 6, 2007
- Tatsuya Kubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS AND DEVELOPING DEVICE
- Publication number 20070274742
- Publication date Nov 29, 2007
- Masayoshi Nakayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Developing device in image-forming device
- Publication number 20070025773
- Publication date Feb 1, 2007
- Susumu Tateyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Cleaning device for image forming apparatus
- Publication number 20060024099
- Publication date Feb 2, 2006
- Takashi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Fixing device
- Publication number 20060002749
- Publication date Jan 5, 2006
- Ricoh Printing Systems, Ltd.
- Takashi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20040240917
- Publication date Dec 2, 2004
- Hideki Ando
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20040028436
- Publication date Feb 12, 2004
- HITACHI PRINTING SOLUTIONS, LTD.
- Takashi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Yoshitaka Fujinuma

Person

Patents Grantslast 30 patents

Developing device, process cartridge, image forming apparatus, and...

Developing device, process cartridge, and image forming apparatus t...

Developing device and image forming apparatus that include a develo...

Developing device, process cartridge, image forming apparatus and d...

Developing device and image forming apparatus including inclined tr...

Developing device, process cartridge, and image forming apparatus t...

Development apparatus having two developer bearers and two developm...

Developing device, process cartridge, and image forming apparatus h...

Developing device, process cartridge, and image forming apparatus

Developing device and image forming apparatus equipped with the same

Developing unit, process cartridge, and image forming apparatus hav...

Developing device and image forming apparatus

Image forming apparatus and developing device

Developing device, process cartridge, and image forming apparatus

Image forming apparatus having a force-converting mechanism to deta...

Developing device in image-forming device

Fixing device including heating roller and pressure roller

Cleaning device for image forming apparatus

Image forming apparatus

Image forming apparatus

Fixing device

Developer bottle

Corona discharging apparatus for use in electrophotographic printin...

Toner cartridge

Developing system having a plurality of developing rollers with opp...

Fixing device

Imaging forming apparatus having a toner exhausting device

Toner bottle cap

Photosensitive drum for printer

Electrophotographic apparatus

Patents Applicationslast 30 patents

DEVELOPING DEVICE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND...

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS T...

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS EQUIPPED WITH THE SAME

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

DEVELOPING UNIT, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

DEVELOPMENT APPARATUS AND IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS AND DEVELOPING DEVICE

Developing device in image-forming device

Cleaning device for image forming apparatus

Fixing device

Image forming apparatus

Image forming apparatus