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Yohei ISHIKAWA
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Okayama-shi, JP
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last 30 patents
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Patent Grant
Carrier core material and electrophotographic development carrier u...
Patent number
11,556,070
Issue date
Jan 17, 2023
Dowa Electronics Materials Co., Ltd.
Takeshi Kawauchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Carrier core material and electrophotographic development carrier u...
Patent number
9,964,878
Issue date
May 8, 2018
Dowa Electronics Materials Co., Ltd.
Yohei Ishikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Ferrite particles, carrier for electrophotographic development usin...
Patent number
9,740,129
Issue date
Aug 22, 2017
Dowa Electronics Materials Co., Ltd.
Shinya Sasaki
C01 - INORGANIC CHEMISTRY
Patents Applications
last 30 patents
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Patent Application
CARRIER CORE MATERIAL AND ELECTROPHOTOGRAPHIC DEVELOPMENT CARRIER U...
Publication number
20210132520
Publication date
May 6, 2021
DOWA ELECTRONICS MATERIALS CO., LTD.
Takeshi KAWAUCHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CARRIER CORE MATERIAL AND ELECTROPHOTOGRAPHIC DEVELOPMENT CARRIER U...
Publication number
20180107129
Publication date
Apr 19, 2018
DOWA ELECTRONICS MATERIALS CO., LTD.
Yohei ISHIKAWA
C01 - INORGANIC CHEMISTRY
Information
Patent Application
CARRIER CORE MATERIAL AND ELECTROPHOTOGRAPHIC DEVELOPMENT CARRIER U...
Publication number
20180052405
Publication date
Feb 22, 2018
DOWA ELECTRONICS MATERIALS CO., LTD.
Yohei ISHIKAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
FERRITE PARTICLES, CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPMENT USIN...
Publication number
20160266510
Publication date
Sep 15, 2016
DOWA ELECTRONICS MATERIALS CO., LTD.
Shinya SASAKI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY