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Yasuyuki Tsuchiya
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Shakujii, JP
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last 30 patents
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Patent Grant
Apparatus for manufacturing optical information recording medium
Patent number
4,907,956
Issue date
Mar 13, 1990
Dainippon Ink and Chemicals, Inc.
Kozo Ezaki
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL