Issued Patents All Time
Showing 1–25 of 90 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11345775 | Polyurethane foams based on polyethercarbonate polyols | Bert Klesczewski, Karsten Malsch, Nicole Welsch, Klaus Lorenz, Hartmut Nefzger +1 more | 2022-05-31 |
| 11130842 | Process for the preparation of polyether polyols | Bert Klesczewski, Michael Schneider | 2021-09-28 |
| 10836858 | Method for producing polyether carbonate polyols | Urs Rauwald, Stefanie Braun, Matthias Wohak, Hartmut Nefzger, Nicole Welsch +3 more | 2020-11-17 |
| 10759902 | Process for the production of polyoxymethylene block copolymers | Ilja Peckermann, Aurel Wolf, Jens Langanke, Christoph Gürtler | 2020-09-01 |
| 10662314 | Method for producing polyether carbonate polyols | Kai Laemmerhold, Hartmut Nefzger | 2020-05-26 |
| 10519276 | Use of alcohols which contain at least two urethane groups for producing polyether carbonate polyols | Urs Rauwald, Bert Klesczewski, Hartmut Nefzger, Aurel Wolf, Jens Langanke | 2019-12-31 |
| 10487175 | Use of alcohols containing at least two urethane groups for preparation of polyether polyols | Urs Rauwald, Bert Klesczewski, Hartmut Nefzger | 2019-11-26 |
| 10421836 | Process for purifying polycarbonate polyols and purifying apparatus therefor | Stefanie Braun, Kai Laemmerhold, Matthias Wohak, Cyrus Ahmadzade-Youssefi, Jürgen Bausa | 2019-09-24 |
| 10239995 | Process for preparing polyether carbonate polyols | Thomas Ernst Müller, Michael Pohl, Walter Leitner | 2019-03-26 |
| 10233298 | Polyurethane foams based on polyether carbonate polyols | Bert Klesczewski, Kai Laemmerhold | 2019-03-19 |
| 10208162 | Method for the production of polyether carbonate polyols and device therefor | Stefanie Braun, Horst Zwick, Matthias Wohak, Aurel Wolf, Michael Traving +1 more | 2019-02-19 |
| 10138328 | Method for producing polyether carbonate polyols | Thomas Ernst Müller, Christoph Gürtler, Matthias Wohak, Carlson Torren | 2018-11-27 |
| 10125217 | Method for producing polyether carbonate polyols | Hans-Georg Pirkl, Kai Laemmerhold, Hartmut Nefzger, Matthias Wohak, Stefanie Braun +3 more | 2018-11-13 |
| 10106641 | Mixtures of polyether carbonate polyols and polyether polyols for producing polyurethane soft foams | Bert Klesczewski, Kai Laemmerhold | 2018-10-23 |
| 10093772 | Process for the production of polyoxymethylene block copolymers | Ilja Peckermann, Aurel Wolf, Jens Langanke, Christoph Gürtler | 2018-10-09 |
| 10040901 | Method for producing polyether carbonate polyols | Stefanie Braun, Kai Laemmerhold, Aurel Wolf, Michael Traving | 2018-08-07 |
| 9994672 | Hydroxy-aminopolymers and method for producing same | Klaus Lorenz, Hartmut Nefzger | 2018-06-12 |
| 9957352 | Use of urethane alcohols for preparing polyether carbonate polyols | Monika Heinz, Hartmut Nefzger, Kai Laemmerhold, Bert Klesczewski, Thomas Ernst Müller +2 more | 2018-05-01 |
| 9826734 | Etherified lactate esters, method for the production thereof and use thereof for enhancing the effect of plant protecting agents | Peter Baur, Klaus Lorenz | 2017-11-28 |
| 9815965 | Method for producing polyether carbonate polyols | Kai Laemmerhold, Hartmut Nefzger | 2017-11-14 |
| 9757492 | Hydroxy amino polymer and use thereof in polyurea/polyurethane tissue adhesives | Heike Heckroth, Christoph Eggert, Klaus Lorenz, Edward P. Browne, Hartmut Nefzger | 2017-09-12 |
| 9714216 | Use of urethane alcohols for preparation of polyether polyols | Kai Laemmerhold, Hartmut Nefzger, Monika Heinz, Bert Klesczewski, Klaus Lorenz | 2017-07-25 |
| 9676905 | Polyether carbonate polyol production method | Thomas Ernst Müller, Christoph Gürtler, Matthias Wohak, Stefanie Braun, Aurel Wolf +1 more | 2017-06-13 |
| 9580540 | Hydroxy amino polymer and use thereof in polyurea/polyurethane tissue adhesives | Heike Heckroth, Christoph Eggert, Klaus Lorenz, Edward P. Browne, Hartmut Nefzger | 2017-02-28 |
| 9468701 | Isocyanate-functional prepolymer for a biologically degradable fabric adhesive | Heike Heckroth, Christoph Eggert, Klaus Lorenz | 2016-10-18 |