Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4339429 | Toothpaste active against plaque comprising a copper compound and a plastic polishing agent | Helmut Raaf, Franz Frosch, Helmut Harth, Helmar R. Wagner | 1982-07-13 |
| 4332791 | Toothpaste active against plaque comprising a copper compound and a silica polishing agent | Helmut Raaf, Franz Frosch, Helmut Harth, Helmar R. Wagner | 1982-06-01 |