Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8156600 | Gum massaging oral brush | Michael F. Roberts, Thomas Craig Masterman, Edward Park, Philip Sweeney, Mingchih M. Tseng +1 more | 2012-04-17 |
| 6497458 | Bristle for a toothbrush | Georges Driesen, Ahmet Firatli, Rainer Hans, Norbert Schaefer, Armin Schwarz-Hartmann +2 more | 2002-12-24 |
| 6327736 | Bristle for a toothbrush | Norbert Schaefer, Armin Schwarz-Hartmann, Mingchih M. Tseng, Helge Zimmet, Georges Driesen +2 more | 2001-12-11 |