Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888379 | Heat-sensitive polyurethane dispersions | Wolfgang Henning, Wolfram V. Langenthal, Hellmut Striegler | 1989-12-19 |
| 4870151 | Polyurea-modified polyetherurethanes and their use as emulsion breakers for water-in-oil emulsions | Thomas Scholl, Thomas Augustin, Christian Wegner | 1989-09-26 |
| 4824639 | Test device and a method for the detection of a component of a liquid sample | Karlheinz Hildenbrand, Hans-Hagen von Dohren, Georg Frank, Rolf Dhein | 1989-04-25 |
| 4824640 | Transparent test strip system | Karlheinz Hildenbrand, Hans-Hagen von Dohren, Klaus Wehling | 1989-04-25 |
| 4804475 | Metallized membrane systems | Kirkor Sirinyan, Karlheinz Hildenbrand, Ulrich von Gizycki, Rudolf Merten, Gerhard D. Wolf | 1989-02-14 |