Kenichi Umino

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Amagasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Inwardly convex vacuum envelope
- Patent number 5,510,671
- Issue date Apr 23, 1996
- Mitsubishi Denki Kabushiki Kaisha
- Koji Nakamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode-ray tube display unit and method of making the same
- Patent number 5,447,460
- Issue date Sep 5, 1995
- Mitsubishi Denki Kabushiki Kaisha
- Koji Nakamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode ray tube device having reinforcing frame
- Patent number 5,304,890
- Issue date Apr 19, 1994
- Mitsubishi Denki Kabushiki Kaisha
- Keitaro Tsukui
- H01 - BASIC ELECTRIC ELEMENTS