Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6558021 | Light emitting diode modules for illuminated signs | Chen-Ho Wu | 2003-05-06 |
| 6485962 | Methods for signal enhancement in optical microorganism sensors | Mary Beth Tabacco, John A. Schanzle | 2002-11-26 |
| 6111739 | LED power supply with temperature compensation | Chen-Ho Wu | 2000-08-29 |
| 5708957 | Optical sensor with radioluminescent light source | Mark Allen Arnold | 1998-01-13 |