Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6810550 | Toothbrush | Ruediger Vetter, Yvette Kosmetatou | 2004-11-02 |
| 6685919 | Plaque-controlling liquid tooth cleaning gel | Hans-Theo Leinen, Dorothea Gregori | 2004-02-03 |
| 6517815 | Cleaning agent for dental use comprising a combination of polishing agents based on a silicic acid and aluminum oxide | Hans-Theo Leinen | 2003-02-11 |
| 6491899 | Anti-inflammatory dental care agents | Hans-Theo Leinen, Claudia Jassoy | 2002-12-10 |
| 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 |
| 5182101 | Anti-plaque toothpaste | Rudolf Lehmann, Hans-Juergen Klueppel | 1993-01-26 |
| 4923685 | Antimicrobial flavored compositions having particular utility as mouth washes | Rudolf Lehmann, Walter Ploeger, Karlheinz Hill, Franz Forg | 1990-05-08 |