Sakae Ishii

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Color cathode ray tube
- Patent number 6,476,544
- Issue date Nov 5, 2002
- Hitachi, Ltd.
- Sakae Ishii
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode ray tube having an internal voltage-dividing resistor
- Patent number 6,433,469
- Issue date Aug 13, 2002
- Hitachi, Ltd.
- Atsushi Tsuruoka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode ray tube
- Patent number 6,294,872
- Issue date Sep 25, 2001
- Hitachi, Ltd.
- Atsushi Tsuruoka
- 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
Information Patent Grant
Electron gun for color picture tube
- Patent number 5,015,910
- Issue date May 14, 1991
- Hitachi, Ltd.
- Yoshiaki Takahashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electron gun for color picture tube
- Patent number 4,851,741
- Issue date Jul 25, 1989
- Hitachi, Ltd.
- Shoji Shirai
- H01 - BASIC ELECTRIC ELEMENTS