Hiroshi Ukai

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Shizuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Charging roll for electrophotographic apparatus
- Patent number 12,013,650
- Issue date Jun 18, 2024
- Sumitomo Riko Company Limited
- Yoshihiro Saito
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging roll for electrophotographic equipment
- Patent number 11,106,151
- Issue date Aug 31, 2021
- Sumitomo Riko Company Limited
- Yoshihiro Saito
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Conductive roller for electrophotographic equipment
- Patent number 10,691,038
- Issue date Jun 23, 2020
- Sumitomo Riko Company Limited
- Takahisa Kose
- B32 - LAYERED PRODUCTS
Information Patent Grant
Charging roll for electrographic apparatus
- Patent number 9,971,271
- Issue date May 15, 2018
- Sumitomo Riko Company Limited
- Yasuhide Watanabe
- B82 - NANO-TECHNOLOGY

Patents Applicationslast 30 patents

Information Patent Application
CHARGING ROLL FOR ELECTROPHOTOGRAPHIC APPARATUS
- Publication number 20230314980
- Publication date Oct 5, 2023
- SUMITOMO RIKO COMPANY LIMITED
- Yoshihiro SAITO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING ROLL FOR ELECTROPHOTOGRAPHIC EQUIPMENT
- Publication number 20210157252
- Publication date May 27, 2021
- SUMITOMO RIKO COMPANY LIMITED
- Yoshihiro SAITO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CONDUCTIVE ROLLER FOR ELECTROPHOTOGRAPHIC EQUIPMENT
- Publication number 20200073274
- Publication date Mar 5, 2020
- SUMITOMO RIKO COMPANY LIMITED
- Takahisa KOSE
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING ROLL FOR ELECTROPHOTOGRAPHIC DEVICE
- Publication number 20180275552
- Publication date Sep 27, 2018
- SUMITOMO RIKO COMPANY LIMITED
- Masanori Satoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING ROLL FOR ELECTROGRAPHIC APPARATUS
- Publication number 20180107134
- Publication date Apr 19, 2018
- SUMITOMO RIKO COMPANY LIMITED
- Yasuhide WATANABE
- B82 - NANO-TECHNOLOGY
Information Patent Application
CONDUCTIVE ROLL AND METHOD FOR MANUFACTURING THE SAME
- Publication number 20150241809
- Publication date Aug 27, 2015
- SUMITOMO RIKO COMPANY LIMITED
- Naoaki Sasakibara
- B32 - LAYERED PRODUCTS