Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5292500 | Plaque-inhibiting toothpaste comprising antibacterial biguanides | Rudolf Lehmann, Walter Ploeger, Franz Foerg | 1994-03-08 |
| 5279814 | Oral-hygiene/dentifrice preparations which protect dental enamel | Hans Laska, Walter Ploeger | 1994-01-18 |