Hirobumi Ooyoshi

Person

Hitachinaka-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Developing device, process cartridge, and image forming apparatus
- Patent number 9,612,547
- Issue date Apr 4, 2017
- Ricoh Company, Ltd.
- Hirobumi Ooyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process unit including a rotatable shaft along a driving force vect...
- Patent number 9,268,300
- Issue date Feb 23, 2016
- Ricoh Company, Ltd.
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Mechanism for electrifying, method of electrifying, and conductive...
- Patent number 9,110,396
- Issue date Aug 18, 2015
- Ricoh Company, Limited
- Minoru Toyoda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developer container, developing device, process cartridge, image fo...
- Patent number 8,913,926
- Issue date Dec 16, 2014
- Ricoh Company, Ltd.
- Kenji Nakamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developer amount detector, and developer container, development dev...
- Patent number 8,861,991
- Issue date Oct 14, 2014
- Ricoh Company, Ltd.
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner conveyor, process cartridge, and image forming apparatus
- Patent number 8,824,951
- Issue date Sep 2, 2014
- Ricoh Company, Ltd.
- Hirobumi Ooyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus capable of effectively utilizing interior s...
- Patent number 8,768,203
- Issue date Jul 1, 2014
- Ricoh Company, Ltd.
- Manabu Hamada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Rotating-body electrification mechanism, image carrier unit, proces...
- Patent number 8,712,277
- Issue date Apr 29, 2014
- Ricoh Company, Limited
- Hirobumi Ooyoshi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Mechanism for electrifying, method of electrifying, and conductive...
- Patent number 8,682,199
- Issue date Mar 25, 2014
- Ricoh Company, Limited
- Minoru Toyoda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process cartridge and image forming apparatus
- Patent number 8,526,849
- Issue date Sep 3, 2013
- Ricoh Company, Limited
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Seal member, developing device, process cartridge, and image formin...
- Patent number 8,442,414
- Issue date May 14, 2013
- Ricoh Company, Limited
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner conveyance device, process unit, and image forming apparatus
- Patent number 8,326,203
- Issue date Dec 4, 2012
- Ricoh Company, Ltd.
- Hirobumi Ooyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning device, process cartridge, and image forming apparatus
- Patent number 8,320,792
- Issue date Nov 27, 2012
- Ricoh Company, Ltd.
- Yoshihiro Kawakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process cartridge and image forming apparatus
- Patent number 8,275,285
- Issue date Sep 25, 2012
- Ricoh Company, Ltd.
- Yoshihiro Kawakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner cartridge with refillable fresh and residual toner chambers,...
- Patent number 8,260,186
- Issue date Sep 4, 2012
- Ricoh Company, Limited
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner-collecting device and image forming apparatus
- Patent number 8,208,832
- Issue date Jun 26, 2012
- Ricoh Company, Limited
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Latent image carrier having pairs of first and second positioning p...
- Patent number 8,160,476
- Issue date Apr 17, 2012
- Ricoh Company, Ltd.
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Powder transport screw, and development device, process unit and im...
- Patent number 8,135,313
- Issue date Mar 13, 2012
- Ricoh Company, Ltd.
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner conveyer device, process cartridge, and image forming apparatus
- Patent number 8,135,329
- Issue date Mar 13, 2012
- Ricoh Company, Ltd.
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner agitating unit, toner hopper, process cartridge, and image fo...
- Patent number 8,103,195
- Issue date Jan 24, 2012
- Ricoh Company, Ltd.
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process unit, and image forming apparatus, with...
- Patent number 8,095,035
- Issue date Jan 10, 2012
- Ricoh Company, Ltd.
- Hirobumi Ooyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Seal member, developing device, process cartridge, and image formin...
- Patent number 8,081,897
- Issue date Dec 20, 2011
- Ricoh Company, Limited
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development device, process unit, and image forming apparatus
- Patent number 8,019,259
- Issue date Sep 13, 2011
- Ricoh Company, Limited
- Hirobumi Ooyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner conveying device, process cartridge, and image forming apparatus
- Patent number 8,019,254
- Issue date Sep 13, 2011
- Ricoh Company, Limited
- Kenzo Tatsumi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device of image forming apparatus
- Patent number 7,979,013
- Issue date Jul 12, 2011
- Ricoh Company, Ltd.
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image forming apparatus that uses this develo...
- Patent number 7,965,957
- Issue date Jun 21, 2011
- Ricoh Company, Ltd.
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process cartridge and image forming apparatus
- Patent number 7,965,958
- Issue date Jun 21, 2011
- Ricoh Company, Ltd.
- Kenzo Tatsumi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Waste-toner collecting device, process cartridge, and image forming...
- Patent number 7,945,203
- Issue date May 17, 2011
- Ricoh Company, Ltd.
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Waste-toner housing device, and image forming apparatus
- Patent number 7,917,077
- Issue date Mar 29, 2011
- Ricoh Company, Ltd.
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Powder conveyance device, toner conveyance device, process cartridg...
- Patent number 7,890,044
- Issue date Feb 15, 2011
- Ricoh Company, Ltd.
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20160259271
- Publication date Sep 8, 2016
- RICOH COMPANY, LTD.
- Hirobumi OOYOSHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
MECHANISM FOR ELECTRIFYING, METHOD OF ELECTRIFYING, AND CONDUCTIVE...
- Publication number 20140133884
- Publication date May 15, 2014
- RICOH COMPANY, LIMITED
- Minoru Toyoda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS UNIT AND IMAGE FORMING APPARATUS
- Publication number 20130216264
- Publication date Aug 22, 2013
- Yoshiyuki SHIMIZU
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPER CONTAINER, DEVELOPING DEVICE, PROCESS CARTRIDGE, IMAGE FO...
- Publication number 20130183065
- Publication date Jul 18, 2013
- Kenji Nakamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CONVEYOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20130136516
- Publication date May 30, 2013
- Hirobumi OOYOSHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
ROTATING-BODY ELECTRIFICATION MECHANISM, IMAGE CARRIER UNIT, PROCES...
- Publication number 20120213544
- Publication date Aug 23, 2012
- Hirobumi OOYOSHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPER AMOUNT DETECTOR, AND DEVELOPER CONTAINER, DEVELOPMENT DEV...
- Publication number 20120189327
- Publication date Jul 26, 2012
- Tomohiro KUBOTA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS CAPABLE OF EFFECTIVELY UTILIZING INTERIOR S...
- Publication number 20120114373
- Publication date May 10, 2012
- RICOH COMPANY, LTD.
- Manabu Hamada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SEAL MEMBER, DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMIN...
- Publication number 20120063806
- Publication date Mar 15, 2012
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Mechanism for electrifying, method of electrifying, and conductive...
- Publication number 20110103837
- Publication date May 5, 2011
- Ricoh Company, Limited
- Minoru Toyoda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Process cartridge and image forming apparatus
- Publication number 20110052255
- Publication date Mar 3, 2011
- Ricoh Company, Limited
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Toner conveyance device, process unit, and image forming apparatus
- Publication number 20110002720
- Publication date Jan 6, 2011
- Ricoh Company, Ltd.
- Hirobumi Ooyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Development device, process unit, and image forming apparatus
- Publication number 20100202796
- Publication date Aug 12, 2010
- Ricoh Company, Ltd.
- Hirobumi Ooyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Cleaning device, process cartridge, and image forming apparatus
- Publication number 20100028045
- Publication date Feb 4, 2010
- Ricoh Company, Ltd.
- Yoshihiro Kawakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS UNIT, AND IMAGE FORMING APPARATUS
- Publication number 20090169246
- Publication date Jul 2, 2009
- Hirobumi Ooyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
POWDER TRANSPORT SCREW, AND DEVELOPMENT DEVICE, PROCESS UNIT AND IM...
- Publication number 20090169265
- Publication date Jul 2, 2009
- Tomofumi YOSHIDA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER AGITATING UNIT, TONER HOPPER, PROCESS CARTRIDGE, AND IMAGE FO...
- Publication number 20090162101
- Publication date Jun 25, 2009
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
WASTE-TONER COLLECTING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING...
- Publication number 20090154973
- Publication date Jun 18, 2009
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SEAL MEMBER, DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMIN...
- Publication number 20090110430
- Publication date Apr 30, 2009
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CARTRIDGE, PROCESS CARTRIDGE, AND METHOD OF MAKING TONER CART...
- Publication number 20090022531
- Publication date Jan 22, 2009
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS
- Publication number 20080279586
- Publication date Nov 13, 2008
- Kenzo Tatsumi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER-COLLECTING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20080267661
- Publication date Oct 30, 2008
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
LATENT IMAGE CARRIER UNIT AND IMAGE FORMING APPARATUS
- Publication number 20080219698
- Publication date Sep 11, 2008
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS
- Publication number 20080205930
- Publication date Aug 28, 2008
- Yoshihiro Kawakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS THAT USES THIS DEVELO...
- Publication number 20080187358
- Publication date Aug 7, 2008
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CONVEYING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20080181692
- Publication date Jul 31, 2008
- Kenzo Tatsumi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
POWDER CONVEYANCE DEVICE, TONER CONVEYANCE DEVICE, PROCESS CARTRIDG...
- Publication number 20080170898
- Publication date Jul 17, 2008
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CLEANING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20080152408
- Publication date Jun 26, 2008
- Yoshihiro Kawakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE USED THEREIN
- Publication number 20080145119
- Publication date Jun 19, 2008
- Kenzo Tatsumi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING APPARATUS
- Publication number 20080145109
- Publication date Jun 19, 2008
- Shin MURAYAMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Hirobumi Ooyoshi

Person

Patents Grantslast 30 patents

Developing device, process cartridge, and image forming apparatus

Process unit including a rotatable shaft along a driving force vect...

Mechanism for electrifying, method of electrifying, and conductive...

Developer container, developing device, process cartridge, image fo...

Developer amount detector, and developer container, development dev...

Toner conveyor, process cartridge, and image forming apparatus

Image forming apparatus capable of effectively utilizing interior s...

Rotating-body electrification mechanism, image carrier unit, proces...

Mechanism for electrifying, method of electrifying, and conductive...

Process cartridge and image forming apparatus

Seal member, developing device, process cartridge, and image formin...

Toner conveyance device, process unit, and image forming apparatus

Cleaning device, process cartridge, and image forming apparatus

Process cartridge and image forming apparatus

Toner cartridge with refillable fresh and residual toner chambers,...

Toner-collecting device and image forming apparatus

Latent image carrier having pairs of first and second positioning p...

Powder transport screw, and development device, process unit and im...

Toner conveyer device, process cartridge, and image forming apparatus

Toner agitating unit, toner hopper, process cartridge, and image fo...

Developing device, process unit, and image forming apparatus, with...

Seal member, developing device, process cartridge, and image formin...

Development device, process unit, and image forming apparatus

Toner conveying device, process cartridge, and image forming apparatus

Developing device of image forming apparatus

Developing device and image forming apparatus that uses this develo...

Developing device, process cartridge and image forming apparatus

Waste-toner collecting device, process cartridge, and image forming...

Waste-toner housing device, and image forming apparatus

Powder conveyance device, toner conveyance device, process cartridg...

Patents Applicationslast 30 patents

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

MECHANISM FOR ELECTRIFYING, METHOD OF ELECTRIFYING, AND CONDUCTIVE...

PROCESS UNIT AND IMAGE FORMING APPARATUS

DEVELOPER CONTAINER, DEVELOPING DEVICE, PROCESS CARTRIDGE, IMAGE FO...

TONER CONVEYOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

ROTATING-BODY ELECTRIFICATION MECHANISM, IMAGE CARRIER UNIT, PROCES...

DEVELOPER AMOUNT DETECTOR, AND DEVELOPER CONTAINER, DEVELOPMENT DEV...

IMAGE FORMING APPARATUS CAPABLE OF EFFECTIVELY UTILIZING INTERIOR S...

SEAL MEMBER, DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMIN...

Mechanism for electrifying, method of electrifying, and conductive...

Process cartridge and image forming apparatus

Toner conveyance device, process unit, and image forming apparatus

Development device, process unit, and image forming apparatus

Cleaning device, process cartridge, and image forming apparatus

DEVELOPING DEVICE, PROCESS UNIT, AND IMAGE FORMING APPARATUS

POWDER TRANSPORT SCREW, AND DEVELOPMENT DEVICE, PROCESS UNIT AND IM...

TONER AGITATING UNIT, TONER HOPPER, PROCESS CARTRIDGE, AND IMAGE FO...

WASTE-TONER COLLECTING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING...

SEAL MEMBER, DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMIN...

TONER CARTRIDGE, PROCESS CARTRIDGE, AND METHOD OF MAKING TONER CART...

DEVELOPING DEVICE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS

TONER-COLLECTING DEVICE AND IMAGE FORMING APPARATUS

LATENT IMAGE CARRIER UNIT AND IMAGE FORMING APPARATUS

PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS THAT USES THIS DEVELO...

TONER CONVEYING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

POWDER CONVEYANCE DEVICE, TONER CONVEYANCE DEVICE, PROCESS CARTRIDG...

CLEANING DEVICE AND IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE USED THEREIN

DEVELOPING APPARATUS