Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5561202 | Polymer electrolyte membrane, and process for the production thereof | Freddy Helmer-Metzmann, Frank Osan, Helmut Ritter, Konstantin Ledjeff, Roland Nolte +1 more | 1996-10-01 |
| 5504182 | Thermoplastically processable aromatic polyether amide | Harald Cherdron, Willi Kreuder, Otto Herrmann-Schonherr | 1996-04-02 |
| 5438082 | Polymer electrolyte membrane, and process for the production thereof | Freddy Helmer-Metzmann, Frank Osan, Helmut Ritter, Konstantin Ledjeff, Roland Nolte +1 more | 1995-08-01 |
| 5376725 | Alloys of cycloolefin polymers and polyaryl ether ketones | Ulrich Epple, Harald Cherdron | 1994-12-27 |
| 5331081 | Use of fluorinated aromatic polyamides as orientation layer for liquid-crystal switching and display devices | Hans-Rolf Dubal, Mikio Murakami, Otto Herrmann-Schonherr | 1994-07-19 |
| 5264633 | Process for the preparation of 1,4-bis(4-hydroxybenzoyl)benzene | Joachim Hackenbruch, Theodor Papenfuhs | 1993-11-23 |
| 5196501 | Substituted aromatic polyamides as orientation layers for liquid crystal display elements and liquid crystal switching elements | Hans-Rolf Dubal, Mikio Murakami, Otto Herrmann-Schonherr | 1993-03-23 |
| 5194561 | Process for the preparation of an aromatic polyether in the presence of finely divided condensation auxiliaries | Hartmut Fischer | 1993-03-16 |
| 5108839 | Fiber-reinforced thermoplastic composite and moldings produced therefrom | Andreas Lucke | 1992-04-28 |
| 5081214 | Process for the preparation of an aromatic polyether | — | 1992-01-14 |
| 4910119 | Polymeric compounds and radiation-sensitive mixture containing them | Juergen Sander | 1990-03-20 |
| 4853448 | Perfluoroalkyl group-containing copolymers | Werner Muller | 1989-08-01 |
| 4822719 | Radiation-sensitive mixture, radiation-sensitive recording material containing said mixture, and process for preparing relief images | Ralf Schulze, Ju Sander, Kurt Erbes | 1989-04-18 |
| 4795829 | Process for separating higher molecular weight constituents from phenol polymers | Gabriele Lambert | 1989-01-03 |
| 4739097 | Monoacrylates of trihydric phenols and method for producing same | Juergen Sander | 1988-04-19 |
| 4724195 | Perfluoroalkyl group-containing copolymers and reproduction layers produced therefrom | Werner Muller | 1988-02-09 |
| 4699867 | Radiation-sensitive positive working composition and material with aqueous-alkaline soluble acryamide or methacryamide copolymer having hydroxyl or carboxyl groups | Ulrich Geissler | 1987-10-13 |
| 4678737 | Radiation-sensitive composition and recording material based on compounds which can be split by acid | Walter Herwig, Kurt Erbes | 1987-07-07 |