Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6224637 | Composition for the dyeing of human hair | Frank Golinski, Heribert Lorenz | 2001-05-01 |
| 4996042 | Toothpaste | — | 1991-02-26 |
| 4824661 | Composition for oral hygiene | — | 1989-04-25 |
| 4420306 | Tetraacrylic and tetramethacrylic esters and dental materials containing same | Jan A. Orlowski, David V. Butler | 1983-12-13 |
| 4397837 | Process and composition for the remineralization and prevention of demineralization of animal teeth including humans | Helmut Raaf, Helmut Harth | 1983-08-09 |
| 4339429 | Toothpaste active against plaque comprising a copper compound and a plastic polishing agent | Helmut Raaf, Dieter Becker, Franz Frosch, Helmut Harth | 1982-07-13 |
| 4332791 | Toothpaste active against plaque comprising a copper compound and a silica polishing agent | Helmut Raaf, Dieter Becker, Franz Frosch, Helmut Harth | 1982-06-01 |
| 4196189 | Dental and oral hygiene preparations | Helmut Raaf | 1980-04-01 |