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Toshiharu Higuchi
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Yokohama, JP
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last 30 patents
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Patent Grant
Impregnated-type cathode substrate with large particle diameter low...
Patent number
6,447,355
Issue date
Sep 10, 2002
Kabushiki Kaisha Toshiba
Eiichirou Uda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Impregnated-type cathode substrate with large particle diameter low...
Patent number
6,304,024
Issue date
Oct 16, 2001
Kabushiki Kaisha Toshiba
Eiichirou Uda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Cathode assembly, electron gun assembly, electron tube, heater, and...
Patent number
6,130,502
Issue date
Oct 10, 2000
Kabushiki Kaisha Toshiba
Kazuo Kobayashi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Impregnated type cathode assembly, cathode substrate for use in the...
Patent number
6,034,469
Issue date
Mar 7, 2000
Kabushiki Kaisha Toshiba
Eiichirou Uda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of manufacturing a cathode assembly
Patent number
5,762,997
Issue date
Jun 9, 1998
Kabushiki Kaisha Toshiba
Akihito Hara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Cathode assembly incorporating a black layer formed from particles...
Patent number
5,543,682
Issue date
Aug 6, 1996
Kabushiki Kaisha Toshiba
Akihito Hara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Indirectly heated cathode assembly and its associated electron gun...
Patent number
5,027,029
Issue date
Jun 25, 1991
Kabushiki Kaisha Toshiba
Toshiharu Higuchi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Cathode structure for electron tube
Patent number
4,524,296
Issue date
Jun 18, 1985
Tokyo Shibaura Denki Kabushiki Kaisha
Shouji Nakayama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Directly heated cathode assembly
Patent number
4,338,542
Issue date
Jul 6, 1982
Tokyo Shibaura Denki Kabushiki Kaisha
Yukio Takanashi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Directly heated type cathode assembly
Patent number
4,298,814
Issue date
Nov 3, 1981
Tokyo Shibaura Denki Kabushiki Kaisha
Yukio Takanashi
H01 - BASIC ELECTRIC ELEMENTS