David Y. Chan

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Austin, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Disposable hard mask for photomask plasma etching
- Patent number 6,908,716
- Issue date Jun 21, 2005
- Photronics, Inc.
- David Y. Chan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Disposable hard mask for photomask plasma etching
- Patent number 6,749,974
- Issue date Jun 15, 2004
- Photronics, Inc.
- David Y. Chan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Disposable hard mask for phase shift photomask plasma etching
- Patent number 6,682,861
- Issue date Jan 27, 2004
- Photronics, Inc.
- David Y. Chan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrical critical dimension measurements on photomasks
- Patent number 6,537,708
- Issue date Mar 25, 2003
- Photronics, Inc.
- David Y. Chan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Disposable hard mask for photomask plasma etching
- Patent number 6,472,107
- Issue date Oct 29, 2002
- Photronics, Inc.
- David Y. Chan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Disposable hard mask for photomask plasma etching
- Publication number 20040209173
- Publication date Oct 21, 2004
- David Y. Chan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Disposable hard mask for phase shift photomask plasma etching
- Publication number 20030186137
- Publication date Oct 2, 2003
- Photronics, Inc.
- David Y. Chan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Disposable hard mask for photomask plasma etching
- Publication number 20030013023
- Publication date Jan 16, 2003
- David Y. Chan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Electrical critical dimension measurements on photomasks
- Publication number 20020102472
- Publication date Aug 1, 2002
- David Y. Chan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY