Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10882768 | Method for processing contaminated wastewater from the preparation of isophorone, isophoronenitrile and isophoronediamine | Robert Jansen, Matthias Woyciechowski | 2021-01-05 |
| 10669293 | Process for preparing isocyanates containing alkoxysilane groups | Stephan Kohlstruk, Dirk Hoppe, Emmanouil Spyrou | 2020-06-02 |
| 10633401 | Process for preparing isocyanates containing alkoxysilane groups | Stephan Kohlstruk, Emmanouil Spyrou, Dirk Hoppe | 2020-04-28 |
| 10626131 | Process for preparing isocyanates containing alkoxysilane groups | Stephan Kohlstruk, Emmanouil Spyrou, Dirk Hoppe | 2020-04-21 |
| 10611782 | Process for preparing isocyanates containing alkoxysilane groups | Stephan Kohlstruk, Emmanouil Spyrou, Dirk Hoppe | 2020-04-07 |
| 10538684 | Coating compositions comprising monoallophanates based on alkoxysilane alkyl isocyanates | Emmanouil Spyrou, Tobias Unkelhaeusser, Sabine Naumann, Holger Loesch, Alina Meier +1 more | 2020-01-21 |
| 10351579 | Monoallophanates based on alkoxysilane alkyl isocyanates | Emmanouil Spyrou, Tobias Unkelhaeusser, Sabine Naumann, Holger Loesch, Marion Ewald +1 more | 2019-07-16 |
| 10144662 | Method for processing contaminated wastewater from the preparation of isophorone, isophoronenitrile and isophoronediamine | Robert Jansen, Matthias Woyciechowski | 2018-12-04 |
| 9994472 | Treatment of the wastewater from isophorone production comprising neutralization, filtration and a downstream chemical oxidation process and subsequent reduction | Yue Chang, Martin Maier, Matthias Woyciechowski | 2018-06-12 |
| 9593135 | Compositions comprising alkoxysilane-containing isocyanates and acid stabilisers | Emmanouil Spyrou, Holger Loesch, Andrea Thesing, Lars Hellkuhl | 2017-03-14 |
| 8822726 | Method for producing diaminodiphenyl alkanes | Gerda Grund | 2014-09-02 |
| 8816125 | Process for the continuous preparation of (cyclo)aliphatic diisocyanates | Hans-Werner Michalczak, Stephan Kohlstruk, Gerda Grund, Rainer Lomoelder | 2014-08-26 |
| 8536370 | Low chlorine, multi-staged method for producing cycloaliphatic disocyanates | Gerda Grund, Stephan Kohlstruk, Christian Lettmann | 2013-09-17 |
| 8389770 | Method for producing diaminodiphenyl alkanes | Gerda Grund | 2013-03-05 |
| 7557242 | Multistage continuous preparation of cycloaliphatic disocyanates | Stephan Kohlstruk, Hans-Werner Michalczak | 2009-07-07 |
| 7420080 | Multistage continuous preparation of cycloaliphatic diisocyanates | Stephan Kohlstruk, Hans-Werner Michalczak | 2008-09-02 |
| 7371891 | Multistage continuous preparation of cycloaliphatic diisocyanates | Stephan Kohlstruk, Hans-Werner Michalczak | 2008-05-13 |
| 7339074 | Multistage continuous preparation of cycloaliphatic diisocyanates | Stephan Kohlstruk, Rainer Elm, Hans-Werner Michalczak | 2008-03-04 |
| 7329776 | Multistage continuous preparation of cycloaliphatic diisocyanates | Stephan Kohlstruk, Rainer Elm, Hans-Werner Michalczak | 2008-02-12 |
| 7307186 | Multistage continuous preparation of cycloaliphatic diisocyanates | Stephan Kohlstruk, Rainer Elm, Hans-Werner Michalczak | 2007-12-11 |
| 6703471 | Preparation of low-odor-storage-stable monomer-containing polyisocyanurates based on isophorone diisocyante | Stephan Kohlstruk, Rainer Lomölder | 2004-03-09 |