Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6051634 | Water-dispersible or water-soluble polyurethanes as additives for building materials | Hans-Josef Laas, Jan Mazanek, Dietbert Knofel, Anke Reinschmidt | 2000-04-18 |
| 6007619 | Use of nonionic, water-dispersible polyisocyanates as concrete additives | Hans-Josef Laas, Martin Brahm, Jan Mazanek, Hermann Kober, Manfred Schonfelder +2 more | 1999-12-28 |