Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667370 | Method for producing prepolymers containing isocyanate end groups, incorporating a small proportion of base isocyanates | James-Michael Barnes, Manfred Schmidt, Stefan Wershofen | 2003-12-23 |
| 6541411 | Titanium/zirconium catalysts and their use to prepare esters or polyesters | Hartmut Nefzger, Erika Bauer | 2003-04-01 |
| 6538158 | Process for preparing 1,4-diaminonaphthalene and/or 1,5-diaminoNaphthalene | Joachim Zechlin, Lothar Duda, Gerhard Wegener, Bodo Temme | 2003-03-25 |