Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5182101 | Anti-plaque toothpaste | Peter Wuelknitz, Rudolf Lehmann | 1993-01-26 |
| 5145665 | Preparation for dental and oral hygiene containing polysaccharide splitting enzymes | Franz Foerg | 1992-09-08 |
| 4820507 | Oral and dental hygiene preparations | Walter Ploeger, Horst Rutzen, Rudolf Lehmann | 1989-04-11 |
| 4795832 | Salicylic acid amides, their use, and a process for their production | Hans-Theo Leinen, Rudolf Lehmann | 1989-01-03 |
| 4748158 | Alkyl glycosides as potentiating agents in antiseptic, disinfecting and cleaning preparations to increase microbicidal activity | Manfred Biermann, Rudolf Lehmann, Harald Schnegelberger, Walter Ploeger, Karl Schmid | 1988-05-31 |
| 4726943 | Anti-caries composition | Walter Ploeger, Hinrich Moeller | 1988-02-23 |