Johji Yahagi

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Developing device with a developer regulator and a stopper
- Patent number 11,307,515
- Issue date Apr 19, 2022
- Ricoh Company, Ltd.
- Hiroshi Kikuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developer conveyance device and image forming apparatus incorporati...
- Patent number 10,935,907
- Issue date Mar 2, 2021
- Ricoh Company, Ltd.
- Yusuke Ishizuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME
- Publication number 20210033998
- Publication date Feb 4, 2021
- Hiroshi KIKUCHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPER CONVEYANCE DEVICE AND IMAGE FORMING APPARATUS INCORPORATI...
- Publication number 20200387085
- Publication date Dec 10, 2020
- Ricoh Company, Ltd.
- Yusuke Ishizuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CLEANING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20200233365
- Publication date Jul 23, 2020
- RICOH COMPANY, LTD.
- Hideki Kimura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY