Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8221733 | Virucidal disinfectant | Michael Lützeler, Volker Ranft | 2012-07-17 |
| 6939840 | Disinfectant | Michael Lützeler, Volker Ranft | 2005-09-06 |
| 6610248 | Disinfectants | Michael Lützeler, Volker Ranft | 2003-08-26 |
| 6464764 | Protective agents for wood | Hans-Norbert Marx | 2002-10-15 |
| 6362370 | Wood preservatives | Joachim Fritschi, Volker Ranft | 2002-03-26 |
| 6348089 | Compositions and process for the protective treatment of wood | Hans-Norbert Marx, Tilo Vogel, Oliver Arlt | 2002-02-19 |
| 6180672 | Wood preservatives | Joachim Fritschi, Volker Ranft | 2001-01-30 |