Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11345775 | Polyurethane foams based on polyethercarbonate polyols | Jörg Hofmann, Karsten Malsch, Nicole Welsch, Klaus Lorenz, Hartmut Nefzger +1 more | 2022-05-31 |
| 11130842 | Process for the preparation of polyether polyols | Jörg Hofmann, Michael Schneider | 2021-09-28 |
| 10519276 | Use of alcohols which contain at least two urethane groups for producing polyether carbonate polyols | Urs Rauwald, Jörg Hofmann, Hartmut Nefzger, Aurel Wolf, Jens Langanke | 2019-12-31 |
| 10487175 | Use of alcohols containing at least two urethane groups for preparation of polyether polyols | Jörg Hofmann, Urs Rauwald, Hartmut Nefzger | 2019-11-26 |
| 10233298 | Polyurethane foams based on polyether carbonate polyols | Kai Laemmerhold, Jörg Hofmann | 2019-03-19 |
| 10106641 | Mixtures of polyether carbonate polyols and polyether polyols for producing polyurethane soft foams | Kai Laemmerhold, Jörg Hofmann | 2018-10-23 |
| 9957352 | Use of urethane alcohols for preparing polyether carbonate polyols | Jörg Hofmann, Monika Heinz, Hartmut Nefzger, Kai Laemmerhold, Thomas Ernst Müller +2 more | 2018-05-01 |
| 9714216 | Use of urethane alcohols for preparation of polyether polyols | Jörg Hofmann, Kai Laemmerhold, Hartmut Nefzger, Monika Heinz, Klaus Lorenz | 2017-07-25 |
| 9328196 | Process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups | Hartmut Nefzger, Jörg Hofmann, Erika Bauer, Klaus Lorenz | 2016-05-03 |
| 9193822 | Process for producing polyester polyols having secondary OH end groups | Hartmut Nefzger, Erika Bauer, Jörg Hofmann, Klaus Lorenz | 2015-11-24 |
| 9139685 | Process for the preparation of a polyurethane polymer with secondary hydroxyl end groups comprising polyester polyols | Hartmut Nefzger, Jörg Hofmann, Erika Bauer, Klaus Lorenz | 2015-09-22 |
| 8715778 | Ballast and process for the production of ballast | Andreas Hoffmann, Heinz-Dieter Ebert | 2014-05-06 |
| 8183302 | Visco-elastic polyurethane foam with castor oil | Sebastien Triouleyre, Matthäus Gossner, Sven Meyer-Ahrens, Alice Mosbach-Rosenberger | 2012-05-22 |
| 6776925 | Process for the preparation of polyether polyols | Jörg Hofmann, Stephan Ehlers, Bernd Klinksiek, Lars Obendorf, Christian Steinlein +1 more | 2004-08-17 |
| 6670406 | Process for producing polyether polyols | Jörg Hofmann, Stephan Ehlers, Bernd Klinksiek, Christian Steinlein, Lars Obendorf +2 more | 2003-12-30 |
| 6444720 | Open-cell rigid polyurethane foams | Jörg Hofmann, Pramod Gupta | 2002-09-03 |