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Document analysis system
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Patent number 5,235,653
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Issue date Aug 10, 1993
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Hitachi, Ltd.
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Yasuaki Nakano
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G06 - COMPUTING CALCULATING COUNTING
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Document analysis system
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Patent number 4,933,984
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Issue date Jun 12, 1990
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Hitachi, Ltd.
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Yasuaki Nakano
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G06 - COMPUTING CALCULATING COUNTING
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Image understanding system
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Patent number 4,907,285
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Issue date Mar 6, 1990
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Hitachi, Ltd.
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Yasuaki Nakano
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G06 - COMPUTING CALCULATING COUNTING
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