Tutomu Tojyou

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Chousei-gun, JP

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Patents Grantslast 30 patents

Information Patent Grant
Color cathode ray tube having a low dynamic focus
- Patent number 6,353,282
- Issue date Mar 5, 2002
- Hitachi, Ltd.
- Tutomu Tojyou
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Color cathode ray tube having a low dynamic focus voltage
- Patent number 6,331,752
- Issue date Dec 18, 2001
- Hitachi, Ltd.
- Tutomu Tojyou
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Color cathode ray tube having a low dynamic focus voltage
- Patent number 6,025,674
- Issue date Feb 15, 2000
- Hitachi Ltd.
- Tutomu Tojyou
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Color cathode ray tube having a low dynamic focus voltage
- Patent number 5,739,631
- Issue date Apr 14, 1998
- Hitachi, Ltd.
- Tutomu Tojyou
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Color cathode ray tube having a low dynamic focus voltage
- Patent number 5,608,284
- Issue date Mar 4, 1997
- Hitachi, Ltd.
- Tutomu Tojyou
- H01 - BASIC ELECTRIC ELEMENTS