Yuuji Ishikura

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Developing device, process cartridge, and image forming apparatus i...
- Patent number 10,649,371
- Issue date May 12, 2020
- Ricoh Company, Ltd.
- Kei Saito
- 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 and image forming apparatus and process cartridge...
- Patent number 9,594,332
- Issue date Mar 14, 2017
- Ricoh Company, Ltd.
- Ichiro Kadota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image forming apparatus including a toner bea...
- Patent number 9,201,336
- Issue date Dec 1, 2015
- Ricoh Company, Ltd.
- Osamu Endou
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development device and image forming apparatus incorporating same
- Patent number 9,158,228
- Issue date Oct 13, 2015
- Ricoh Company, Ltd.
- Yoshiko Ogawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process cartridge, image forming apparatus, and...
- Patent number 9,128,416
- Issue date Sep 8, 2015
- Ricoh Company, Ltd.
- Ichiro Kadota
- 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
Development device, and image forming apparatus and process cartrid...
- Patent number 8,965,254
- Issue date Feb 24, 2015
- Ricoh Company, Ltd.
- Yoshiko Ogawa
- 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

Patents Applicationslast 30 patents

Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20240419100
- Publication date Dec 19, 2024
- Yumi INOUE
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20240393714
- Publication date Nov 28, 2024
- Osamu SAITO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS I...
- Publication number 20190286013
- Publication date Sep 19, 2019
- RICOH COMPANY, LTD.
- Kei Saito
- 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
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 AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE...
- Publication number 20160062274
- Publication date Mar 3, 2016
- Ichiro KADOTA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND...
- Publication number 20150147094
- Publication date May 28, 2015
- RICOH COMPANY, LTD.
- Ichiro KADOTA
- 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 20130216276
- Publication date Aug 22, 2013
- Yoshiko OGAWA
- 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
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20130209143
- Publication date Aug 15, 2013
- Osamu ENDOU
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
- Publication number 20130071147
- Publication date Mar 21, 2013
- Yoshiko OGAWA
- 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

Yuuji Ishikura

Person

Patents Grantslast 30 patents

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

Developing device and image forming apparatus incorporating same

Developing device and image forming apparatus incorporating same

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

Developing device and image forming apparatus including a toner bea...

Development device and image forming apparatus incorporating same

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

Development device and image forming apparatus and process unit inc...

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

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

Patents Applicationslast 30 patents

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

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

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME

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

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

DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS AND PROCESS UNIT INC...

DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME

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

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

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS

DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME

DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME