Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5835185 | Spring-hinged frame for eyeware | William R. Kallman, Leonard M. Dorfman | 1998-11-10 |
| 5455637 | Electrochromic eyewear system, rechargeable eyewear and external charger therefor | William R. Kallman, Mark B. Roberts, David F. Baretich, Leonard M. Dorfman | 1995-10-03 |
| 5455638 | Electrochromic eyewear | William R. Kallman, Mark B. Roberts, David F. Baretich, Leonard M. Dorfman | 1995-10-03 |