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last 30 patents
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Patent Grant
Optical functional materials and process for producing the same
Patent number
6,340,404
Issue date
Jan 22, 2002
Dai Nippon Printing Co., Ltd.
Motohiro Oka
G02 - OPTICS
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Patent Grant
Optical functional materials and process for producing the same
Patent number
6,064,524
Issue date
May 16, 2000
Dai Nippon Printing Co., Ltd.
Motohiro Oka
G02 - OPTICS
Information
Patent Grant
Optical functional materials and process for producing the same
Patent number
5,909,314
Issue date
Jun 1, 1999
Dai Nippon Printing Co., Ltd.
Motohiro Oka
G02 - OPTICS