Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880564 | Antifoams for aqueous systems and their use | Christian Guth, Hans-Ulrich Berendt | 1989-11-14 |
| 4859207 | Process for dyeing textile planar fabrics made from polyamides: with melamine compound as resist agent | Thys Bouwknegt | 1989-08-22 |