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Hirotaka Tagawa
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Yokohama-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Conductive polymer material, method for producing conductive polyme...
Patent number
9,561,502
Issue date
Feb 7, 2017
Bridgestone Corporation
Tadashi Nakajima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Conductive roller and manufacturing method thereof
Patent number
9,535,354
Issue date
Jan 3, 2017
Bridgestone Corporation
Hirotaka Tagawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Developing roller
Patent number
9,201,337
Issue date
Dec 1, 2015
Bridgestone Corporation
Hirotaka Tagawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrically conductive roller
Patent number
8,932,194
Issue date
Jan 13, 2015
Bridgestone Corporation
Hirotaka Tagawa
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Electrifying roller
Patent number
8,711,543
Issue date
Apr 29, 2014
Bridgestone Corporation
Junichi Takano
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Electrifying roller
Patent number
8,642,148
Issue date
Feb 4, 2014
Bridgestone Corporation
Izumi Egashira
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Developing roller and imaging apparatus comprising the same
Patent number
8,550,968
Issue date
Oct 8, 2013
Bridgestone Corporation
Takayuki Sugimura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing roller comprising surface layer containing water-dispers...
Patent number
8,401,444
Issue date
Mar 19, 2013
Bridgestone Corporation
Takayuki Sugimura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
CONDUCTIVE POLYMER MATERIAL, METHOD FOR PRODUCING CONDUCTIVE POLYME...
Publication number
20150352542
Publication date
Dec 10, 2015
BRIDGESTONE CORPORATION
Tadashi NAKAJIMA
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
DEVELOPING ROLLER
Publication number
20140126935
Publication date
May 8, 2014
BRIDGESTONE CORPORATION
Hirotaka Tagawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CONDUCTIVE ROLLER AND MANUFACTURING METHOD THEREOF
Publication number
20120316045
Publication date
Dec 13, 2012
BRIDGESTONE CORPORATION
Hirotaka Tagawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
ELECTRIFYING ROLLER
Publication number
20120129666
Publication date
May 24, 2012
BRIDGESTONE CORPORATION
Izumi Egashira
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
ELECTRIFYING ROLLER
Publication number
20110249372
Publication date
Oct 13, 2011
BRIDGESTONE CORPORATION
Junichi Takano
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METHOD FOR MANUFACTURING ELECTRIFYING ROLLER AND ELECTRIFYING ROLLE...
Publication number
20110206414
Publication date
Aug 25, 2011
BRIDGESTONE CORPORATION
Hirotaka Tagawa
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
ELECTRICALLY CONDUCTIVE ROLLER
Publication number
20110124478
Publication date
May 26, 2011
Hirotaka Tagawa
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
DEVELOPMENT ROLLER
Publication number
20100189473
Publication date
Jul 29, 2010
Bridgestone Corporation
Takayuki Sugimura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Developing roller and imaging apparatus comprising the same
Publication number
20070111874
Publication date
May 17, 2007
Bridgestone Corporation
Takayuki Sugimura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Conductive roller and image forming apparatus comprising the same
Publication number
20070037680
Publication date
Feb 15, 2007
Bridgestone Corporation
Hirotaka Tagawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY