S. David Roh

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Allen, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Current biased dual DBR grating semiconductor laser
- Patent number 7,339,968
- Issue date Mar 4, 2008
- The Board of Trustees of the University of Illinois
- James J. Coleman
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Current biased dual DBR grating semiconductor laser
- Patent number 6,728,290
- Issue date Apr 27, 2004
- The Board of Trustees of the University of Illinois
- James J. Coleman
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Current biased dual DBR grating semiconductor laser
- Publication number 20050180479
- Publication date Aug 18, 2005
- The Board of Trustees of the Universtiy of Illinois
- James J. Coleman
- H01 - BASIC ELECTRIC ELEMENTS