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Hyogo, JP
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last 30 patents
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Patent Grant
Magnetic recording apparatus having a reduced thickness
Patent number
6,055,122
Issue date
Apr 25, 2000
Mitsubishi Denki Kabushiki Kaisha
Naoto Sugawara
G11 - INFORMATION STORAGE
Information
Patent Grant
Focusing error detecting apparatus with light switching and detecto...
Patent number
5,004,900
Issue date
Apr 2, 1991
Mitsubishi Denki Kabushiki Kaisha
Masatomo Seya
G02 - OPTICS
Information
Patent Grant
Wavelength selective optical recording and reproducing device
Patent number
4,956,812
Issue date
Sep 11, 1990
Mitsubishi Denki Kabushiki Kaisha
Masatomo Seya
G11 - INFORMATION STORAGE
Information
Patent Grant
Apparatus for regenerating information from records made by optical...
Patent number
4,956,813
Issue date
Sep 11, 1990
Mitsubishi Denki Kabushiki Kaisha
Masatomo Seya
G11 - INFORMATION STORAGE