Chiaki Hatsuda

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Phase shift mask and method of producing the same
- Patent number 5,972,543
- Issue date Oct 26, 1999
- Dai Nippon Printing Co., Ltd.
- Toshifumi Yokoyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Phase shift mask and method of producing the same
- Patent number 5,811,208
- Issue date Sep 22, 1998
- Dai Nippon Printing Co., Ltd.
- Toshifumi Yokoyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY