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Sayoko Oba
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Ibaraki, JP
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last 30 patents
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Patent Grant
Image recording method and apparatus
Patent number
5,144,343
Issue date
Sep 1, 1992
Hitachi, Ltd.
Sayoko Oba
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Patent Grant
Electrostatic recording head, image recording apparatus, developing...
Patent number
4,977,415
Issue date
Dec 11, 1990
Hitachi, Ltd.
Sayoko Oba
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY