Hiroshi Fukushima

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Toyokawa, JP

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Patents Grantslast 30 patents

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Remote control system
- Patent number 4,540,856
- Issue date Sep 10, 1985
- Hitachi, Ltd.
- Teruo Fujii
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Directly heated cathode for electron tube
- Patent number 4,349,766
- Issue date Sep 14, 1982
- Hitachi, Ltd.
- Hisashi Ando
- H01 - BASIC ELECTRIC ELEMENTS
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Directly heated cathode for electron tube
- Patent number 4,310,777
- Issue date Jan 12, 1982
- Hitachi, Ltd.
- Hiroshi Fukushima
- H01 - BASIC ELECTRIC ELEMENTS
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Electron tube cathode
- Patent number 4,291,252
- Issue date Sep 22, 1981
- Hitachi, Ltd.
- Toshiyuki Aida
- H01 - BASIC ELECTRIC ELEMENTS
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Direct-heated cathode structure
- Patent number 4,251,746
- Issue date Feb 17, 1981
- Hitachi, Ltd.
- Takao Kawamura
- H01 - BASIC ELECTRIC ELEMENTS
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Directly heated cathode for electron tube
- Patent number 4,220,891
- Issue date Sep 2, 1980
- Hitachi, Ltd.
- Hisashi Ando
- H01 - BASIC ELECTRIC ELEMENTS
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Protective circuit for electroacoustic transducer with hall element...
- Patent number 4,163,119
- Issue date Jul 31, 1979
- Hitachi, Ltd.
- Tatsuo Baba
- H04 - ELECTRIC COMMUNICATION TECHNIQUE