Katsumi Hirota

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Mobara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Deflection yoke and cathode ray tube device
- Patent number 7,091,677
- Issue date Aug 15, 2006
- Hitachi, Ltd.
- Soichi Sakurai
- 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
Deflection yoke and cathode ray tube device
- Patent number 6,737,818
- Issue date May 18, 2004
- Hitachi, Ltd.
- Soichi Sakurai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Color cathode ray tube having a large-diameter lens
- Patent number 5,894,190
- Issue date Apr 13, 1999
- Hitachi, Ltd.
- Katsumi Hirota
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Deflection yoke and cathode ray tube device
- Publication number 20040183485
- Publication date Sep 23, 2004
- HITACHI, LTD.
- Soichi Sakurai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Deflection yoke and cathode ray tube device
- Publication number 20030094910
- Publication date May 22, 2003
- Hitachi, Inc.
- Soichi Sakurai
- 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