Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4499023 | Process for separating technically pure 2,4-diisocyanatotoluene or isomer mixtures having an increased content of 2,4-diisocyanatotoluene from isomer mixtures of 2,4- and 2,6-diisocyanatotoluene | Adolf Wissner, Werner Hauser | 1985-02-12 |