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Sik Hing Yuen
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Foster City, CA, US
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last 30 patents
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Patent Application
Dimmable thermally controlled safety light emitting diode illuminat...
Publication number
20110285308
Publication date
Nov 24, 2011
Bonnie A. Crystal
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
High efficiency low cost safety light emitting diode illumination d...
Publication number
20110128742
Publication date
Jun 2, 2011
Pui Hang Yuen
F21 - LIGHTING
Information
Patent Application
High efficiency low cost safety light emitting diode illumination d...
Publication number
20090175041
Publication date
Jul 9, 2009
Pui Hang Yuen
F21 - LIGHTING