Koichi Hirose

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Analog integrated circuit
- Patent number 4,689,579
- Issue date Aug 25, 1987
- Hitachi, Ltd.
- Akira Shibata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electronic circuitry utilizing an inerted Darlington amplifier outp...
- Patent number 4,634,995
- Issue date Jan 6, 1987
- Hitachi, Ltd.
- Isao Nakagawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Magnetic tape reproducing apparatus
- Patent number 4,519,005
- Issue date May 21, 1985
- Hitachi, Ltd.
- Akira Shibata
- G11 - INFORMATION STORAGE
Information Patent Grant
Picture reproducing apparatus in a helical scanning video tape reco...
- Patent number 4,497,004
- Issue date Jan 29, 1985
- Hitachi, Ltd.
- Akira Shibata
- G11 - INFORMATION STORAGE
Information Patent Grant
Non-linear emphasis circuit
- Patent number 4,451,746
- Issue date May 29, 1984
- Hitachi, Ltd.
- Koichi Hirose
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Reproducing system for video tape recorders
- Patent number 4,321,618
- Issue date Mar 23, 1982
- Hitachi, Ltd.
- Koichi Hirose
- H04 - ELECTRIC COMMUNICATION TECHNIQUE