Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7537776 | Liquid concentrate for preserving cosmetics | Wolfgang Beilfuss, Gisela Hahn, Ralf Gradke | 2009-05-26 |
| 7364746 | Liquid concentrate for the preservation of cosmetic and pharmaceutical products | Gisela Hahn, Ralf Gradtke, Wolfgang Beilfuss | 2008-04-29 |
| 7268102 | Glyceryl ethers as preservatives for cooling lubricants | Wolfgang Beilfuss, Ralf Gradtke, Wolfgang Siegert, Karl-Heinz Diehl | 2007-09-11 |
| 7165549 | Nasal spray | Tom Philipps, Olaf Hirsch, Eva-Maria Karow | 2007-01-23 |
| 6469060 | Compositions based on iodopropynyl-and formaldehyde donor compounds and to their use as preservatives | Wolfgang Beilfuss, Wolfgang Siegert | 2002-10-22 |
| 6355679 | Preservative compositions based on iodopropynl- and formaldehyde donor compounds | Wolfgang Beilfuss, Wolfgang Siegert | 2002-03-12 |
| 5811628 | Method for the complete hydrodechlorination of chlorinated hydrocarbons | Rainer Schoedel, Peter Birke, Reinhard Geyer, Ulrich Neumann, Werner Haertwig +4 more | 1998-09-22 |
| 5625110 | Hydrodehalogenation catalyst | Rainer Schoedel, Hans-Dieter Neubauer, Peter Birke, Hans-Dieter Berrouschot, Hans-Georg Friese +2 more | 1997-04-29 |
| 4681746 | Method of regulating the amount of reducing agent added during catalytic reduction of NO.sub.x contained in flue gases | Stanislaw Michalak, Jurgen Meier | 1987-07-21 |
| 4565679 | Method of regulating the amount of reducing agent added during catalytic reduction of NO.sub.x contained in flue gases | Stanislaw Michalak, Jurgen Meier | 1986-01-21 |