David A. Wassen

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Andover, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Isolation chamber arrangement for serial processing of semiconducto...
- Patent number 7,008,879
- Issue date Mar 7, 2006
- Semigear, Inc.
- Chunghsin Lee
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Isolation chamber arrangement for serial processing of semiconducto...
- Patent number 6,827,789
- Issue date Dec 7, 2004
- Semigear, Inc.
- Chunghsin Lee
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Isolation chamber arrangement for serial processing of semiconducto...
- Publication number 20040203178
- Publication date Oct 14, 2004
- Chunghsin Lee
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Isolation chamber arrangement for serial processing of semiconducto...
- Publication number 20040000378
- Publication date Jan 1, 2004
- Chunghsin Lee
- H01 - BASIC ELECTRIC ELEMENTS