Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4761136 | Visible light cured impression material | Carole L. Groh, Robert L. Probst | 1988-08-02 |
| 4252526 | Barium aluminum silicate filler for U.V. curable composites | Frank H. Freeman | 1981-02-24 |
| 4192795 | Barium aluminum silicate filler for U.V. curable composites | Frank H. Freeman | 1980-03-11 |