Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6439249 | Outdoor umbrella with lighting arrangement | Wilson Linwei Weng | 2002-08-27 |
| 6359915 | Wavelength-stabilized Bragg laser | Thomas L. Koch | 2002-03-19 |
| 6069732 | Semiconductor interferometric optical wavelength conversion device | Thomas L. Koch | 2000-05-30 |