Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870151 | Polyurea-modified polyetherurethanes and their use as emulsion breakers for water-in-oil emulsions | Hermann Perrey, Thomas Augustin, Christian Wegner | 1989-09-26 |
| 4797435 | Use of 3-benzalphthalides as UV stabilizers for thermoplastic, aromatic polyesters, polycarbonates and polyester carbonates | Volker Serini, Dietrich Rathmann, Ross Savage, Klaus Kircher | 1989-01-10 |