Takumi Karasawa

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Sakura, JP

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Patents Grantslast 30 patents

Information Patent Grant
Manufacturing method of cathode ray tube
- Patent number 5,178,570
- Issue date Jan 12, 1993
- Hitachi, Ltd.
- Kozo Tomiyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Color cathode-ray tube having deflection yoke
- Patent number 5,028,898
- Issue date Jul 2, 1991
- Hitachi, Ltd.
- Michio Tsukii
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Misconvergence measuring apparatus
- Patent number 4,988,857
- Issue date Jan 29, 1991
- Hitachi, Ltd.
- Takumi Karasawa
- G01 - MEASURING TESTING
Information Patent Grant
Method of and apparatus for manufacturing Braun tubes
- Patent number 4,940,439
- Issue date Jul 10, 1990
- Hitachi, Ltd.
- Teruo Yokosouchi
- H01 - BASIC ELECTRIC ELEMENTS