Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819367 | Shade-free light control system and method | — | 2004-11-16 |
| 6508074 | Air conditioning system and method | — | 2003-01-21 |
| 6253560 | Air conditioning system and method | — | 2001-07-03 |
| 6239353 | Solar tracker | Christopher Michael Hall | 2001-05-29 |
| 6130772 | Electrochromic device and method | — | 2000-10-10 |