Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8833978 | Traffic signal light device | Chin-Wang Tu, Shih-Chang Wang, Yi-Kai Cheng, Shu-Chun Chang, Bing-Yu Wu | 2014-09-16 |
| 8111011 | LED luminaire with improved life and operation management | Chin-Wang Tu, Shih-Chang Wang | 2012-02-07 |
| 7488086 | Retrofitting of fluorescent tubes with light-emitting diode (LED) modules for various signs and lighting applications | Chin-Wang Tu | 2009-02-10 |
| 7461947 | LED tube lights with clear bottom base | Shih Wang, Chinmau James Hwang | 2008-12-09 |
| 7434968 | Traffic signal lamp assembly and method of replacing same | — | 2008-10-14 |
| 7347706 | Light emitting diode (LED) based street light and other lighting applications | Chin-Wang Tu, Shih-Chang Wang | 2008-03-25 |
| 7303309 | Method and apparatus for backlit signs with light emitting diode modules | Steve Bacilieri | 2007-12-04 |
| 7172324 | Internally illuminated light panel with LED modules having light redirecting devices | Chinmau James Hwang, Chin-Wang Tu, Ching-Yuan Chung | 2007-02-06 |
| 6911915 | Compact light emitting diode retrofit lamp and method for traffic signal lights | Steve Bacilieri, Chao Wang, Shih-Chang Wang | 2005-06-28 |
| 6905227 | Light emitting diode retrofit module for traffic signal lights | — | 2005-06-14 |
| 6761471 | Method and apparatus for retrofitting backlit signs with light emitting diode modules | — | 2004-07-13 |
| 6558021 | Light emitting diode modules for illuminated signs | Han-Jen Chuang | 2003-05-06 |
| 6502956 | Light emitting diode lamp with individual LED lenses | — | 2003-01-07 |
| 6481130 | Light emitting diode linear array with lens stripe for illuminated signs | — | 2002-11-19 |
| 6268801 | Method and apparatus for retro-fitting a traffic signal light with a light emitting diode lamp module | — | 2001-07-31 |
| 6111739 | LED power supply with temperature compensation | Han-Jen Chuang | 2000-08-29 |
| D424715 | L.E.D lamp | — | 2000-05-09 |
| 6036336 | Light emitting diode retrofitting lamps for illuminated traffic signs | — | 2000-03-14 |
| 5949347 | Light emitting diode retrofitting lamps for illuminated signs | — | 1999-09-07 |
| 5929465 | Non-quadrilateral light emitting devices of compound semiconductor | Coeyen Nee, Jeff Chang, C. James Hwang | 1999-07-27 |
| D388726 | LED traffic signal light | — | 1998-01-06 |
| D385051 | LED light bulb | — | 1997-10-14 |
| D373387 | Light emitting diode open sign | — | 1996-09-03 |