Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4294666 | Process for the manufacture of 4,4'-diphenyl-methane diisocyanate and a mixture of diphenyl-methane diisocyanate isomers containing a small amount of uretdiones and hydrolyzable chlorine | Hans J. Astheimer, Horst Brandtstaedter, Rainer Ohlinger, Willy van Pee, Jaak Van Steen +2 more | 1981-10-13 |