Shinichi Ishinagawa

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Cathode ray tube having an improved electron gun
- Patent number 6,509,682
- Issue date Jan 21, 2003
- Hitachi, Ltd.
- Shinichi Ishinagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Color cathode ray tube having an improved first grid electrode
- Patent number 5,872,423
- Issue date Feb 16, 1999
- Hitachi, Ltd.
- Yasuhisa Shiraishi
- H01 - BASIC ELECTRIC ELEMENTS