Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4952392 | Use of periwinkle in oral hygiene | — | 1990-08-28 |
| 4853213 | Use of periwinkle in oral hygiene | — | 1989-08-01 |
| 4220573 | Novel ionic polymer compositions | Jan Bock, Lowell Westerman | 1980-09-02 |