Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846650 | Oral compositions and methods for reducing dental calculus | Rodney D. Bush, Richard J. Sunberg | 1989-07-11 |
| 4830847 | Diphosphonate-derivatized macromolecules | Charles Raymond Degenhardt, James W. Poser | 1989-05-16 |