Shigehiko Yamamoto

Person

Saitama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Oxidation resistant impregnated cathode
- Patent number 4,855,637
- Issue date Aug 8, 1989
- Hitachi, Ltd.
- Isato Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Impregnated cathode
- Patent number 4,783,613
- Issue date Nov 8, 1988
- Hitachi, Ltd.
- Shigehiko Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Impregnated cathode
- Patent number 4,737,679
- Issue date Apr 12, 1988
- Hitachi, Ltd.
- Shigehiko Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Ion beam apparatus
- Patent number 4,687,930
- Issue date Aug 18, 1987
- Hitachi, Ltd.
- Hifumi Tamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Impregnated cathode
- Patent number 4,626,470
- Issue date Dec 2, 1986
- Hitachi, Ltd.
- Shigehiko Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Impregnated cathode
- Patent number 4,518,890
- Issue date May 21, 1985
- Hitachi, Ltd.
- Sadanori Taguchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Field emission cathode and method of fabricating the same
- Patent number 4,379,250
- Issue date Apr 5, 1983
- Hitachi, Ltd.
- Shigeyuki Hosoki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Directly heated cathode for electron tube
- Patent number 4,310,777
- Issue date Jan 12, 1982
- Hitachi, Ltd.
- Hiroshi Fukushima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electron tube cathode
- Patent number 4,291,252
- Issue date Sep 22, 1981
- Hitachi, Ltd.
- Toshiyuki Aida
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electron tube cathode and method for producing the same
- Patent number 4,260,665
- Issue date Apr 7, 1981
- Hitachi, Ltd.
- Toshiyuki Aida
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode for an electron source and a method of producing the same
- Patent number 4,193,013
- Issue date Mar 11, 1980
- Hitachi, Ltd.
- Masaaki Futamoto
- H01 - BASIC ELECTRIC ELEMENTS

Shigehiko Yamamoto

Person

Patents Grantslast 30 patents

Oxidation resistant impregnated cathode

Impregnated cathode

Impregnated cathode

Ion beam apparatus

Impregnated cathode

Impregnated cathode

Field emission cathode and method of fabricating the same

Directly heated cathode for electron tube

Electron tube cathode

Electron tube cathode and method for producing the same

Cathode for an electron source and a method of producing the same