Norio Iwamura

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Chousei, JP

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Patents Grantslast 30 patents

Information Patent Grant
Cathode ray tube having an improved indirectly heated cathode struc...
- Patent number 6,614,147
- Issue date Sep 2, 2003
- Hitachi, Ltd.
- Sachio Koizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode ray tube having an improved heater
- Patent number 6,552,479
- Issue date Apr 22, 2003
- Hitachi, Ltd.
- Toshifumi Komiya
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode ray tube having an improved cathode
- Patent number 6,504,293
- Issue date Jan 7, 2003
- Hitachi, Ltd.
- Sachio Koizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode ray tube having an improved indirectly heated cathode
- Patent number 6,492,768
- Issue date Dec 10, 2002
- Hitachi, Ltd.
- Sachio Koizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode ray tube having an indirectly heated cathode provided with...
- Patent number 6,335,590
- Issue date Jan 1, 2002
- Hitachi, Ltd.
- Norio Iwamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode ray tube having an improved indirectly heated cathode
- Patent number 6,191,528
- Issue date Feb 20, 2001
- Hitachi, Ltd.
- Norio Iwamura
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Cathode ray tube
- Publication number 20040007954
- Publication date Jan 15, 2004
- Sachio Koizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Cathode ray tube having an improved heater
- Publication number 20020033660
- Publication date Mar 21, 2002
- Toshifumi Komiya
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Cathode ray tube having an improved indirectly heated cathode struc...
- Publication number 20010015613
- Publication date Aug 23, 2001
- Sachio Koizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Cathode ray tube having an improved indirectly heated cathode
- Publication number 20010001531
- Publication date May 24, 2001
- Norio Iwamura
- H01 - BASIC ELECTRIC ELEMENTS