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Masaaki Okunaka
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Fujisawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Organic EL display device
Patent number
8,237,353
Issue date
Aug 7, 2012
Hitachi Displays, Ltd.
Hironori Toyoda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Organic EL display device comprising moisture diffusion reduction b...
Patent number
8,129,902
Issue date
Mar 6, 2012
Hitachi Displays, Ltd.
Kazuhiko Kai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Organic electroluminescent display device
Patent number
7,786,666
Issue date
Aug 31, 2010
Hitachi Displays, Ltd.
Masaaki Okunaka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Organic electroluminescent display device with a light shielding me...
Patent number
7,705,531
Issue date
Apr 27, 2010
Hitachi Displays, Ltd.
Masamitsu Furuie
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of driving organic EL device and display device
Patent number
7,671,825
Issue date
Mar 2, 2010
Hitachi Displays, Ltd.
Norikazu Uchiyama
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Organic EL display device
Patent number
7,642,701
Issue date
Jan 5, 2010
Hitachi Displays, Ltd.
Kazuhiko Kai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Display device
Patent number
7,479,953
Issue date
Jan 20, 2009
Hitachi Displays, Ltd.
Hironori Toyoda
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Display panel
Patent number
7,474,046
Issue date
Jan 6, 2009
Hitachi Displays, Ltd.
Masamitsu Furuie
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Organic EL display device
Patent number
7,332,854
Issue date
Feb 19, 2008
Hitachi Displays, Ltd.
Kazuhiko Kai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for manufacturing an organic electroluminescence display
Patent number
7,258,586
Issue date
Aug 21, 2007
Hitachi Displays, Ltd.
Takuo Tamura
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Organic EL display device with arrangement to suppress degradation...
Patent number
7,034,453
Issue date
Apr 25, 2006
Hitachi Displays, Ltd.
Kazuhiko Kai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Organic-electroluminescence device, process for its production and...
Patent number
6,936,409
Issue date
Aug 30, 2005
Hitachi, Ltd.
Masaaki Okunaka
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Flat panel display unit and method of repairing defects in its line...
Patent number
6,937,296
Issue date
Aug 30, 2005
Hitachi, Ltd.
Michinobu Mizumura
G02 - OPTICS
Information
Patent Grant
Organic-electroluminescence device, process for its production and...
Patent number
6,814,887
Issue date
Nov 9, 2004
Hitachi, Ltd.
Masaaki Okunaka
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Organic-electroluminescence device, process for its production and...
Patent number
6,696,181
Issue date
Feb 24, 2004
Hitachi, Ltd.
Masaaki Okunaka
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method and apparatus for inspection and correction of wiring of ele...
Patent number
5,883,437
Issue date
Mar 16, 1999
Hitachi, Ltd.
Shigenobu Maruyama
G02 - OPTICS
Information
Patent Grant
Process for producing solar cells
Patent number
4,643,913
Issue date
Feb 17, 1987
Hitachi, Ltd.
Masaaki Okunaka
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photomask with corrected white defects
Patent number
4,510,222
Issue date
Apr 9, 1985
Hitachi, Ltd.
Masaaki Okunaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process for forming thin film
Patent number
4,495,218
Issue date
Jan 22, 1985
Hitachi, Ltd.
Kazufumi Azuma
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Electrode material for semi-conductor devices
Patent number
4,486,232
Issue date
Dec 4, 1984
Hitachi, Ltd.
Mitsuo Nakatani
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method and apparatus for redressing defective photomask
Patent number
4,463,073
Issue date
Jul 31, 1984
Hitachi, Ltd.
Tateoki Miyauchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for correcting transparent defects on a photomask
Patent number
4,444,801
Issue date
Apr 24, 1984
Hitachi, Ltd.
Mikio Hongo
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Composition and process for preparing transparent conducting film
Patent number
4,420,500
Issue date
Dec 13, 1983
Hitachi, Ltd.
Mitsuo Nakatani
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing transparent electroconductive film
Patent number
4,369,208
Issue date
Jan 18, 1983
Hitachi, Ltd.
Masaaki Okunaka
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Composition and process for producing transparent conductive film
Patent number
4,303,554
Issue date
Dec 1, 1981
Hitachi, Ltd.
Ryoichi Sudo
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Patents Applications
last 30 patents
Information
Patent Application
ORGANIC EL DISPLAY DEVICE
Publication number
20100164372
Publication date
Jul 1, 2010
Kazuhiko Kai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Organic EL Display Device
Publication number
20100007272
Publication date
Jan 14, 2010
Hitachi Displays, Lttd.
Hironori Toyoda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Organic electroluminescence display device
Publication number
20090051285
Publication date
Feb 26, 2009
Hitachi Displays, Ltd.
Kenta Kajiyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
ORGANIC EL DISPLAY DEVICE
Publication number
20080290789
Publication date
Nov 27, 2008
Kazuhiko Kai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Organic light emitting display device
Publication number
20070236425
Publication date
Oct 11, 2007
Masamitus Furuie
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Organic EL light emitting display device
Publication number
20070216290
Publication date
Sep 20, 2007
Genshiro Kawachi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Organic electroluminescent display device
Publication number
20070069640
Publication date
Mar 29, 2007
Masaaki Okunaka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Method of driving organic EL device and display device
Publication number
20060197462
Publication date
Sep 7, 2006
Norikazu Uchiyama
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Application
Organic EL display device
Publication number
20060158107
Publication date
Jul 20, 2006
Kazuhiko Kai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Display panel
Publication number
20060114176
Publication date
Jun 1, 2006
Masamitsu Furuie
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Application
Display device
Publication number
20060050029
Publication date
Mar 9, 2006
Hitachi Displays, Ltd.
Hironori Toyoda
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Application
Method for manufacturing an organic electroluminescence display
Publication number
20050215163
Publication date
Sep 29, 2005
Takuo Tamura
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Organic electroluminescent display device
Publication number
20050035709
Publication date
Feb 17, 2005
Hitachi Displays, Ltd.
Masamitsu Furuie
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Organic EL light emitting display device
Publication number
20040252088
Publication date
Dec 16, 2004
Genshiro Kawachi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Organic EL display device
Publication number
20040119419
Publication date
Jun 24, 2004
Kazuhiko Kai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Organic-electroluminescence device, process for its production and...
Publication number
20030098444
Publication date
May 29, 2003
Masaaki Okunaka
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Organic-electroluminescence device, process for its production and...
Publication number
20030068583
Publication date
Apr 10, 2003
Masaaki Okunaka
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Flat panel display unit and method of repairing defects in its line...
Publication number
20020180926
Publication date
Dec 5, 2002
Hitachi, Ltd
Michinobu Mizumura
G02 - OPTICS
Information
Patent Application
Organic-electroluminescence device, process for its production and...
Publication number
20020106529
Publication date
Aug 8, 2002
Masaaki Okunaka
H01 - BASIC ELECTRIC ELEMENTS