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Keiichiro YUTANI
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Method for producing a pi-electron conjugated compound
Patent number
9,224,959
Issue date
Dec 29, 2015
Ricoh Company, Ltd.
Daisuke Goto
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Organic electronic device containing an organic semiconductor mater...
Patent number
9,123,896
Issue date
Sep 1, 2015
Ricoh Company, Ltd.
Daisuke Goto
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Organic semiconductive material precursor containing dithienobenzod...
Patent number
8,952,181
Issue date
Feb 10, 2015
Ricoh Company, Ltd.
Toshiya Sagisaka
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Leaving substituent-containing compound, products produced using th...
Patent number
8,680,296
Issue date
Mar 25, 2014
Ricoh Company, Ltd.
Daisuke Goto
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Organic transistor array, display device and method of fabricating...
Patent number
8,598,570
Issue date
Dec 3, 2013
Ricoh Company, Ltd.
Keiichiro Yutani
G02 - OPTICS
Information
Patent Grant
Organic semiconductive material precursor containing dithienobenzod...
Patent number
8,575,365
Issue date
Nov 5, 2013
Ricoh Company, Ltd.
Toshiya Sagisaka
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Organic transistor, organic transistor array, and display device
Patent number
8,207,528
Issue date
Jun 26, 2012
Ricoh Company, Ltd.
Keiichiro Yutani
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Organic transistor, organic transistor array and display apparatus
Patent number
8,183,563
Issue date
May 22, 2012
Ricoh Company, Ltd.
Keiichiro Yutani
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
LEAVING SUBSTITUENT-CONTAINING COMPOUND, ORGANIC SEMICONDUCTOR MATE...
Publication number
20140187797
Publication date
Jul 3, 2014
Daisuke Goto
C07 - ORGANIC CHEMISTRY
Information
Patent Application
LEAVING SUBSTITUENT-CONTAINING COMPOUND, ORGANIC SEMICONDUCTOR MATE...
Publication number
20140175416
Publication date
Jun 26, 2014
Daisuke Goto
C07 - ORGANIC CHEMISTRY
Information
Patent Application
ORGANIC SEMICONDUCTIVE MATERIAL PRECURSOR CONTAINING DITHIENOBENZOD...
Publication number
20140024841
Publication date
Jan 23, 2014
Toshiya Sagisaka
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
LEAVING SUBSTITUENT-CONTAINING COMPOUND, ORGANIC SEMICONDUCTOR MATE...
Publication number
20130095605
Publication date
Apr 18, 2013
Ricoh Company, Ltd.
Daisuke Goto
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
ORGANIC SEMICONDUCTIVE MATERIAL PRECURSOR CONTAINING DITHIENOBENZOD...
Publication number
20130096320
Publication date
Apr 18, 2013
Toshiya Sagisaka
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
LEAVING SUBSTITUENT-CONTAINING COMPOUND, ORGANIC SEMICONDUCTOR MATE...
Publication number
20120153271
Publication date
Jun 21, 2012
Daisuke Goto
C07 - ORGANIC CHEMISTRY
Information
Patent Application
ORGANIC SEMICONDUCTOR ELEMENT AND ORGANIC ELECTRODE
Publication number
20110215306
Publication date
Sep 8, 2011
Takuji KATO
B82 - NANO-TECHNOLOGY
Information
Patent Application
ORGANIC TRANSISTOR, ORGANIC TRANSISTOR ARRAY AND DISPLAY APPARATUS
Publication number
20100224865
Publication date
Sep 9, 2010
RICOH COMPANY, LTD.
Keiichiro Yutani
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
ORGANIC TRANSISTOR, ORGANIC TRANSISTOR ARRAY, AND DISPLAY DEVICE
Publication number
20100193775
Publication date
Aug 5, 2010
Keiichiro Yutani
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
ORGANIC TRANSISTOR ARRAY, DISPLAY DEVICE AND METHOD OF FABRICATING...
Publication number
20090321727
Publication date
Dec 31, 2009
RICOH COMPANY, LTD.
Keiichiro YUTANI
G02 - OPTICS
Information
Patent Application
ACTIVE MATRIX SUBSTRATE AND ELECTRONIC DISPLAY DEVICE
Publication number
20090103036
Publication date
Apr 23, 2009
RICOH COMPANY, LTD.
Atsushi Onodera
H01 - BASIC ELECTRIC ELEMENTS