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Kazumasa Hirai
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Mobara, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Projection tube having different neck diameters
Patent number
7,075,221
Issue date
Jul 11, 2006
Hitachi, Ltd.
Kouichi Saitou
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Projection tube having different neck diameters
Patent number
6,998,767
Issue date
Feb 14, 2006
Hitachi Ltd.
Kouichi Saitou
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Projection type cathode ray tube device employing a cathode ray tub...
Patent number
6,750,602
Issue date
Jun 15, 2004
Hitachi Ltd.
Katsumi Hirota
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Color cathode ray tube with specific skirt portion
Patent number
6,222,309
Issue date
Apr 24, 2001
Hitachi, Ltd.
Hiroki Taga
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Shadow mask structure with specific skirt portion
Patent number
6,166,482
Issue date
Dec 26, 2000
Hitachi, Ltd.
Hiroki Taga
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
COLD CATHODE DISCHARGE TUBE AND MANUFACTURING METHOD THEREOF AND LI...
Publication number
20100157203
Publication date
Jun 24, 2010
Hitachi Display Devices, Ltd.
Kazumasa HIRAI
G02 - OPTICS
Information
Patent Application
Projection tube having different neck diameters
Publication number
20040027043
Publication date
Feb 12, 2004
Kouichi Saitou
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Projection type cathode ray tube device employing a cathode ray tub...
Publication number
20030030361
Publication date
Feb 13, 2003
Katsumi Hirota
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Projection tube having different neck diameters
Publication number
20020180335
Publication date
Dec 5, 2002
Kouichi Saitou
H01 - BASIC ELECTRIC ELEMENTS