Keisuke Nakazawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Halftone phase shifting photomask and blanks for halftone phase shi...
- Patent number 6,780,547
- Issue date Aug 24, 2004
- Dainippon Printing Co., Ltd.
- Toshiaki Motonaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Halftone phase shift photomask and blanks for halftone phase shift...
- Patent number 6,709,791
- Issue date Mar 23, 2004
- Dai Nippon Printing Co., Ltd.
- Hiroshi Mohri
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Halftone phase shifting photomask and blanks for halftone phase shi...
- Publication number 20020015187
- Publication date Feb 7, 2002
- Toshiaki Motonaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY