Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875858 | Method and composition for detecting dentin | Chin-Teh Huang | 1989-10-24 |
| 4867682 | Dental impression tray | Paul D. Hammesfahr, Ronald L. Sitzema, Jr. | 1989-09-19 |
| 4846165 | Wound dressing membrane | Pamela H. Hare | 1989-07-11 |
| 4814423 | Dual bonding adhesive composition | Chin-Teh Huang | 1989-03-21 |