Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8592623 | Method for producing polyester polyols having low amounts of dioxane waste | Rolf Roers, Hartmut Nefzger, Erika Bauer, Johannes Van De Braak, Torsten Heinemann | 2013-11-26 |
| 8481606 | Process for the production of polyester polyols with low volumes of dioxane waste | Hartmut Nefzger, Erika Bauer, Johannes Van De Braak | 2013-07-09 |
| 8334035 | Polyester polyols from terephthalic acid and oligoalkylene oxides | Hartmut Nefzger, Erika Bauer, Uwe Kuenzel, Lutz Brassat | 2012-12-18 |