Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6984524 | Chemiluminescent detection of explosives, narcotics, and other chemical substances | Dao Nguyen, Stewart Berry, Jan Prot Geblewicz, Phuong Huynh | 2006-01-10 |
| 6158243 | Butterfly gem | — | 2000-12-12 |
| D390155 | Butterfly gem cut | — | 1998-02-03 |
| 4411050 | Jewelry clasp | — | 1983-10-25 |