Toshifumi Yokoyama

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for photomask fabrication
- Patent number 6,979,408
- Issue date Dec 27, 2005
- Intel Corporation
- Yoshihiro Tezuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method for repairing photomask by removing residual defect in said...
- Patent number 5,965,301
- Issue date Oct 12, 1999
- Dai Nippon Printing Co., Ltd.
- Masami Nara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Method and apparatus for photomask fabrication
- Publication number 20060027325
- Publication date Feb 9, 2006
- Yoshihiro Tezuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Method and apparatus for photomask fabrication
- Publication number 20040244912
- Publication date Dec 9, 2004
- Yoshihiro Tezuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY