Keishi Tanaka

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Phase-shift mask, manufacturing method thereof and manufacturing me...
- Patent number 7,754,397
- Issue date Jul 13, 2010
- Toppan Printing Co., Ltd.
- Toshio Konishi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Levenson type phase shift mask and manufacturing method thereof
- Patent number 7,632,613
- Issue date Dec 15, 2009
- Toppan Printing Co., Ltd.
- Yosuke Kojima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Phase-shift mask, manufacturing method thereof and manufacturing me...
- Publication number 20070269726
- Publication date Nov 22, 2007
- Toppan Printing Co., Ltd.
- Toshio Konishi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Levenson type phase shift mask and manufacturing method thereof
- Publication number 20070037072
- Publication date Feb 15, 2007
- Toppan Printing Co., Ltd.
- Yosuke Kojima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY