Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6555688 | Method for the production of triethylene diamine making use of ethylene diamine | Erich Frauendorfer, Matthias Frauenkron, Bernd Stein | 2003-04-29 |
| 5189073 | Process for the production of expanded materials based on polyurea elastomers | Heiko Humbert, Dudley J. Primeaux, II | 1993-02-23 |