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Keiichi Komatsu
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Yokohama, JP
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last 30 patents
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Patent Grant
Dual record/read head video recording and playback apparatus with f...
Patent number
4,992,891
Issue date
Feb 12, 1991
Hitachi, Ltd.
Keiichi Komatsu
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical magnetic recording and reproducing method and apparatus cap...
Patent number
4,901,297
Issue date
Feb 13, 1990
Hitachi, Ltd.
Keiichi Komatsu
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording/reproducing apparatus for video and sound
Patent number
4,556,917
Issue date
Dec 3, 1985
Hitachi, Ltd.
Akira Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Chroma signal recording and reproducing circuit
Patent number
4,524,380
Issue date
Jun 18, 1985
Hitachi, Ltd.
Akira Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Magnetic recording/reproducing apparatus
Patent number
4,497,000
Issue date
Jan 29, 1985
Hitachi, Ltd.
Toshimichi Terada
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
Record/reproduce circuit for VTR
Patent number
4,466,026
Issue date
Aug 14, 1984
Hitachi, Ltd.
Kuniaki Miura
G11 - INFORMATION STORAGE