Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4681903 | Polyester polyols, a process for their production and their use in the isocyanate polyaddition process | Peter Haas, Hans-Ulrich Weber, Claus-Dieter Sommerfeld, Rolf Wiedermann | 1987-07-21 |