Akihiro Takeyama

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Toner, developer, and image forming apparatus
- Patent number 10,324,390
- Issue date Jun 18, 2019
- Ricoh Company, Ltd.
- Akihiro Takeyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner, toner storage unit, image forming apparatus, and method for...
- Patent number 10,073,366
- Issue date Sep 11, 2018
- Ricoh Company, Ltd.
- Kohsuke Nagata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner, developer, and image forming apparatus
- Patent number 9,588,451
- Issue date Mar 7, 2017
- Ricoh Company, Ltd.
- Akihiro Takeyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrostatic image developing toner, developer, and image forming...
- Patent number 9,557,671
- Issue date Jan 31, 2017
- Ricoh Company, Ltd.
- Ryuta Chiba
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
TONER, DEVELOPER, AND IMAGE FORMING APPARATUS
- Publication number 20180259865
- Publication date Sep 13, 2018
- Akihiro TAKEYAMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER, TONER STORAGE UNIT, IMAGE FORMING APPARATUS, AND METHOD FOR...
- Publication number 20170363980
- Publication date Dec 21, 2017
- Kohsuke NAGATA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER, DEVELOPER, AND IMAGE FORMING APPARATUS
- Publication number 20160187795
- Publication date Jun 30, 2016
- Akinori SAITOH
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER, DEVELOPER, AND IMAGE FORMING APPARATUS
- Publication number 20150323878
- Publication date Nov 12, 2015
- Akihiro TAKEYAMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER, DEVELOPER, AND IMAGE FORMING APPARATUS
- Publication number 20150261113
- Publication date Sep 17, 2015
- Akihiro Takeyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
ELECTROSTATIC IMAGE DEVELOPING TONER, DEVELOPER, AND IMAGE FORMING...
- Publication number 20150248070
- Publication date Sep 3, 2015
- Ryuta CHIBA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY