Kinji Okubo

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Patents Grantslast 30 patents

Information Patent Grant
Halftone phase shift mask, blank for the same, and methods of manuf...
- Patent number 5,935,735
- Issue date Aug 10, 1999
- Toppan Printing Co., Ltd.
- Kinji Okubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY