Issued Patents All Time
Showing 26–50 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8329063 | Low-emission formaldehyde donor preparations | Ralf Gradtke, Klaus Weber | 2012-12-11 |
| 8197833 | Liquid concentrate for preserving cosmetics | Gisela Hahn, Klaus Weber, Ralf Gradke | 2012-06-12 |
| 8093193 | Composition based on glycerol ether/polyol mixtures | Sabine Wutsch, Klaus Weber, Ralf Gradtke | 2012-01-10 |
| 8084480 | Microbicidal composition based on formaldehyde donor compounds and antioxidants | Ralf Gradtke, Klaus Weber, Wolfgang Siegert | 2011-12-27 |
| 8076363 | Isothiazolone-containing preservative with improved effectiveness | Ralf Gradtke, Petra Kolditz | 2011-12-13 |
| 8058218 | Composition based on glycerol ether/polyol mixtures | Sabine HERWEG, Klaus Weber, Ralf Gradtke | 2011-11-15 |
| 7935701 | Microbicidal composition based on formaldehyde donor compounds and antioxidants | Ralf Gradtke, Klaus Weber, Wolfgang Siegert | 2011-05-03 |
| 7846885 | Glyceryl ethers as preservatives for cooling lubricants | Ralf Gradtke, Wolfgang Siegert, Karl-Heinz Diehl, Klaus Weber | 2010-12-07 |
| 7781467 | Microbicidal composition based on formaldehyde donor compounds and antioxidants | Ralf Gradtke, Klaus Weber, Wolfgang Siegert | 2010-08-24 |
| 7781466 | Preparation for the fungicidal and algicidal finish of alkaline coating compositions | Petra Kolditz, Klaus Weber, Ralf Gradtke | 2010-08-24 |
| 7537776 | Liquid concentrate for preserving cosmetics | Gisela Hahn, Klaus Weber, Ralf Gradke | 2009-05-26 |
| 7481973 | Composition and process for chemical and thermal disinfection | Ralf Gradtke, Peter Goroncy-Bermes, Sabine Behrends, Michael Mohr | 2009-01-27 |
| 7368466 | Low-temperature-stable preservatives | Ralf Gradtke, Olaf Kramf, Andreas Teevst | 2008-05-06 |
| 7364746 | Liquid concentrate for the preservation of cosmetic and pharmaceutical products | Gisela Hahn, Klaus Weber, Ralf Gradtke | 2008-04-29 |
| 7268102 | Glyceryl ethers as preservatives for cooling lubricants | Ralf Gradtke, Wolfgang Siegert, Karl-Heinz Diehl, Klaus Weber | 2007-09-11 |
| 7045542 | Low-temperature-stable preservatives | Ralf Gradtke, Olaf Kramf, Andreas Teevst | 2006-05-16 |
| 6956062 | Storage-stable compositions of glycerol monoalkyl ethers | Ralf Gradtke | 2005-10-18 |
| 6469060 | Compositions based on iodopropynyl-and formaldehyde donor compounds and to their use as preservatives | Wolfgang Siegert, Klaus Weber | 2002-10-22 |
| 6465498 | Use of derivatives of methylene-bis-oxazolidine and compositions obtained thereby | Ralf Gradtke | 2002-10-15 |
| 6380391 | Process for the preparation of bis(4-amino-1-pyridinium) alkanes | Ralf Gradtke, Michael Streek | 2002-04-30 |
| 6355679 | Preservative compositions based on iodopropynl- and formaldehyde donor compounds | Wolfgang Siegert, Klaus Weber | 2002-03-12 |
| 6348483 | Use of derivatives of methylene-bis-oxazolidine and compositions obtained thereby | Ralf Gradtke | 2002-02-19 |
| 5756500 | Aqueous dispersion having a fungicidal and algicidal effect | Heinz Eggensperger, Karl-Heinz Diehl, Peter Oltmanns | 1998-05-26 |
| 5516510 | Deodorizing active ingredients | Heinz Eggensperger, Karl-Heinz Diehl, Peter Oltmanns | 1996-05-14 |
| 5393789 | Amine-and alcohol-based disinfectant concentrate and disinfectant and use thereof | Heinz Eggensperger, Lower Bernd, Michael Mohr, Peter Goroncy-Bermes | 1995-02-28 |