Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8650053 | Systems and methods for determining concentrations of exposure | Han Chen, Weimin Dong | 2014-02-11 |
| 8380545 | Systems and methods for determining concentrations of exposure | Han Chen, Weimin Dong | 2013-02-19 |
| 7707050 | Systems and methods for determining concentrations of exposure | Han Chen, Weimin Dong | 2010-04-27 |
| D493229 | Dental hygiene tray | Donald G. Coburn | 2004-07-20 |
| 5997297 | Method of mounting tool used in dentistry | Donald G. Coburn | 1999-12-07 |
| D415280 | Tool mount for dental tools | Donald G. Coburn | 1999-10-12 |