Yoshihiro Fujiwara

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Developer accommodating device with screw including screw blade as...
- Patent number 11,835,887
- Issue date Dec 5, 2023
- Ricoh Company, Ltd.
- Yuuki Tsuchiya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus including a process cartridge that includes...
- Patent number 11,275,325
- Issue date Mar 15, 2022
- Ricoh Company, Ltd.
- Hotaru Hashikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process cartridge, and image forming apparatus
- Patent number 11,256,194
- Issue date Feb 22, 2022
- Ricoh Company, Ltd.
- Yuuki Tsuchiya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developer container, developing device, and image forming apparatus
- Patent number 11,112,731
- Issue date Sep 7, 2021
- Ricoh Company, Ltd.
- Naohiro Kawashima
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Image forming apparatus including control circuitry to execute a wa...
- Patent number 11,086,251
- Issue date Aug 10, 2021
- Ricoh Company, Ltd.
- Ryusuke Mase
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process cartridge, and image forming apparatus
- Patent number 10,705,484
- Issue date Jul 7, 2020
- Ricoh Company, Ltd.
- Yuki Oshikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus executing charge removal for photoconductor...
- Patent number 9,897,947
- Issue date Feb 20, 2018
- Ricoh Company, Ltd.
- Yuka Kanatani
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image forming apparatus incorporating same
- Patent number 9,772,579
- Issue date Sep 26, 2017
- Ricoh Company, Ltd.
- Yuki Oshikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image forming apparatus incorporating same
- Patent number 9,625,851
- Issue date Apr 18, 2017
- Ricoh Company, Ltd.
- Yuki Oshikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, image forming apparatus, and process cartridge
- Patent number 9,405,223
- Issue date Aug 2, 2016
- Ricoh Company, Ltd.
- Yuki Oshikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image forming apparatus incorporating same
- Patent number 9,176,430
- Issue date Nov 3, 2015
- Ricoh Company, Ltd.
- Hideo Yoshizawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development device including a removable seal to seal a supplied-de...
- Patent number 8,971,769
- Issue date Mar 3, 2015
- Ricoh Company, Limited
- Yasuo Miyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development device, and process cartridge and image forming apparat...
- Patent number 8,953,987
- Issue date Feb 10, 2015
- Ricoh Company, Ltd.
- Hideki Kimura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process cartridge for image forming apparatus including a hollow al...
- Patent number 8,909,095
- Issue date Dec 9, 2014
- Ricoh Company, Ltd.
- Masayuki Yamane
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development device, process cartridge, and image forming apparatus...
- Patent number 8,873,979
- Issue date Oct 28, 2014
- Ricoh Company, Ltd.
- Yoshihiro Fujiwara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development device, and process cartridge and image forming apparat...
- Patent number 8,855,536
- Issue date Oct 7, 2014
- Ricoh Company, Ltd.
- Hideki Kimura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development device including a removable seal to seal a supplied-de...
- Patent number 8,750,752
- Issue date Jun 10, 2014
- Ricoh Company, Limited
- Yasuo Miyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development device, process cartridge, and image forming apparatus...
- Patent number 8,649,714
- Issue date Feb 11, 2014
- Ricoh Company, Ltd.
- Norio Kudo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development device, process cartridge, and image forming apparatus
- Patent number 8,571,449
- Issue date Oct 29, 2013
- Ricoh Company, Limited
- Yasuo Miyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and method using an environment detector wh...
- Patent number 8,457,516
- Issue date Jun 4, 2013
- Ricoh Company, Limited
- Yoshihiro Fujiwara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development device, process cartridge including same, and image for...
- Patent number 8,433,224
- Issue date Apr 30, 2013
- Ricoh Company, Limited
- Yoshihiro Fujiwara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development device, process cartridge, and image forming apparatus
- Patent number 8,326,180
- Issue date Dec 4, 2012
- Ricoh Company, Limited
- Yoshihiro Fujiwara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development device and image forming apparatus
- Patent number 8,326,184
- Issue date Dec 4, 2012
- Ricoh Company, Limited
- Norio Kudo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process cartridge, method and image forming appa...
- Patent number 8,238,801
- Issue date Aug 7, 2012
- Ricoh Company, Limited
- Yasuo Miyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Apparatus for detecting amount of toner deposit and controlling den...
- Patent number 7,610,004
- Issue date Oct 27, 2009
- Ricoh Company, Ltd.
- Shinji Kato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method for evaluating changes in resistance of electric resistance...
- Patent number 7,280,792
- Issue date Oct 9, 2007
- Ricoh Company, Ltd.
- Yuuji Sawai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Apparatus for detecting amount of toner deposit and controlling den...
- Patent number 7,203,433
- Issue date Apr 10, 2007
- Ricoh Company, Ltd.
- Shinji Kato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Intermediate image transfer device for a color image forming apparatus
- Patent number 7,003,238
- Issue date Feb 21, 2006
- Ricoh Company, Ltd.
- Ken Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20240077813
- Publication date Mar 7, 2024
- Kei SAITO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FILTER HOLDING DEVICE, DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IM...
- Publication number 20230330582
- Publication date Oct 19, 2023
- Yuta YABUTA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPER ACCOMMODATING DEVICE, DEVELOPING DEVICE, PROCESS CARTRIDG...
- Publication number 20220397841
- Publication date Dec 15, 2022
- Yuuki TSUCHIYA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20210080856
- Publication date Mar 18, 2021
- Hotaru HASHIKAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20210041806
- Publication date Feb 11, 2021
- Yuuki TSUCHIYA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPER CONTAINER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20200174400
- Publication date Jun 4, 2020
- Naohiro KAWASHIMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20200117119
- Publication date Apr 16, 2020
- Ricoh Company, Ltd.
- Ryusuke MASE
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20200103824
- Publication date Apr 2, 2020
- Ricoh Company, Ltd.
- Yuki OSHIKAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
- Publication number 20170108795
- Publication date Apr 20, 2017
- Yuki OSHIKAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS AND CONTROL METHOD FOR SAME
- Publication number 20170075264
- Publication date Mar 16, 2017
- Yuka KANATANI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
- Publication number 20160238966
- Publication date Aug 18, 2016
- Yuki OSHIKAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE
- Publication number 20150362861
- Publication date Dec 17, 2015
- Yuki OSHIKAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPMENT DEVICE, AND PROCESS CARTRIDGE AND IMAGE FORMING APPARAT...
- Publication number 20140376970
- Publication date Dec 25, 2014
- Hideki KIMURA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
- Publication number 20140270838
- Publication date Sep 18, 2014
- Hideo Yoshizawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPMENT DEVICE INCLUDING A REMOVABLE SEAL TO SEAL A SUPPLIED-DE...
- Publication number 20140233984
- Publication date Aug 21, 2014
- Yasuo MIYOSHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20140016960
- Publication date Jan 16, 2014
- Yasuo MIYOSHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS
- Publication number 20130064570
- Publication date Mar 14, 2013
- Masayuki YAMANE
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPMENT DEVICE, AND PROCESS CARTRIDGE AND IMAGE FORMING APPARAT...
- Publication number 20130045029
- Publication date Feb 21, 2013
- Hideki KIMURA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS...
- Publication number 20120207492
- Publication date Aug 16, 2012
- Yoshihiro FUJIWARA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20120134702
- Publication date May 31, 2012
- Yoshihiro FUJIWARA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS...
- Publication number 20120051793
- Publication date Mar 1, 2012
- Norio Kudo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPMENT DEVICE, PROCESS CARTRIDGE INCLUDING SAME, AND IMAGE FOR...
- Publication number 20110150525
- Publication date Jun 23, 2011
- Yoshihiro FUJIWARA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20110008073
- Publication date Jan 13, 2011
- Norio KUDO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20100215401
- Publication date Aug 26, 2010
- Yoshihiro FUJIWARA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20100202805
- Publication date Aug 12, 2010
- Yasuo MIYOSHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20090238610
- Publication date Sep 24, 2009
- Yasuo MIYOSHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20080292338
- Publication date Nov 27, 2008
- Yoshihiro FUJIWARA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Surface-moving-body driving device, belt device, and image forming...
- Publication number 20080145102
- Publication date Jun 19, 2008
- Ricoh Company, Limited
- Tsutomu Katoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
APPARATUS FOR DETECTING AMOUNT OF TONER DEPOSIT AND CONTROLLING DEN...
- Publication number 20070134014
- Publication date Jun 14, 2007
- Shinji Kato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Apparatus for detecting amount of toner deposit and controlling den...
- Publication number 20050147424
- Publication date Jul 7, 2005
- Shinji Kato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Yoshihiro Fujiwara

Person

Patents Grantslast 30 patents

Developer accommodating device with screw including screw blade as...

Image forming apparatus including a process cartridge that includes...

Developing device, process cartridge, and image forming apparatus

Developer container, developing device, and image forming apparatus

Image forming apparatus including control circuitry to execute a wa...

Developing device, process cartridge, and image forming apparatus

Image forming apparatus executing charge removal for photoconductor...

Developing device and image forming apparatus incorporating same

Developing device and image forming apparatus incorporating same

Developing device, image forming apparatus, and process cartridge

Developing device and image forming apparatus incorporating same

Development device including a removable seal to seal a supplied-de...

Development device, and process cartridge and image forming apparat...

Process cartridge for image forming apparatus including a hollow al...

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

Development device, and process cartridge and image forming apparat...

Development device including a removable seal to seal a supplied-de...

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

Development device, process cartridge, and image forming apparatus

Image forming apparatus and method using an environment detector wh...

Development device, process cartridge including same, and image for...

Development device, process cartridge, and image forming apparatus

Development device and image forming apparatus

Developing device, process cartridge, method and image forming appa...

Apparatus for detecting amount of toner deposit and controlling den...

Method for evaluating changes in resistance of electric resistance...

Apparatus for detecting amount of toner deposit and controlling den...

Intermediate image transfer device for a color image forming apparatus

Patents Applicationslast 30 patents

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

FILTER HOLDING DEVICE, DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IM...

DEVELOPER ACCOMMODATING DEVICE, DEVELOPING DEVICE, PROCESS CARTRIDG...

IMAGE FORMING APPARATUS

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

DEVELOPER CONTAINER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME

IMAGE FORMING APPARATUS AND CONTROL METHOD FOR SAME

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME

DEVELOPING DEVICE, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE

DEVELOPMENT DEVICE, AND PROCESS CARTRIDGE AND IMAGE FORMING APPARAT...

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME

DEVELOPMENT DEVICE INCLUDING A REMOVABLE SEAL TO SEAL A SUPPLIED-DE...

DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS

DEVELOPMENT DEVICE, AND PROCESS CARTRIDGE AND IMAGE FORMING APPARAT...

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

IMAGE FORMING APPARATUS

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

DEVELOPMENT DEVICE, PROCESS CARTRIDGE INCLUDING SAME, AND IMAGE FOR...

DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS

DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

Surface-moving-body driving device, belt device, and image forming...

APPARATUS FOR DETECTING AMOUNT OF TONER DEPOSIT AND CONTROLLING DEN...

Apparatus for detecting amount of toner deposit and controlling den...