Issued Patents All Time
Showing 126–132 of 132 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4902830 | Polyaralkylated hydroxybenzamides, process for their preparation and their use | Christian Wegner, Christian Frolich, Artur Botta, Heinz-Joachim Rother | 1990-02-20 |
| 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 |
| 4792609 | Indoline and 1,2,3,4-tetrahydroquinoline N(dicarboalkoxyvinyl) substituted derivatives | Otto Exner, Peter Finkel, Hermann Perrey | 1988-12-20 |
| 4745172 | Phenolic resins using polyamines and polyethers in their production | Reinhard Preuss, Manfred Abele, Hermann Fries, Theo Kempermann | 1988-05-17 |
| 4745175 | Condensation products of thioalkylene oxides of polythio-alkylene oxides with polyalkylene oxides, their preparation and their use as breakers for water-in-oil emulsions | Wolfgang Oberkirch, Hermann Perrey | 1988-05-17 |
| 4588807 | Benzylidenemalonic or vinylogous benzylidenemalonic acid polyesters, their preparation and their use for the UV stabilization of thermoplastics | Reinhard Preuss, Burkhard Lachmann, Hartmut Lower, Peter Muller | 1986-05-13 |