Issued Patents All Time
Showing 76–93 of 93 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4670524 | Preparation of water-soluble polymer powders and their use | Karlheinz Messmer, Karl Hennig, Albert Hettche, Wolfgang Trieselt, Hans-Juergen Raubenheimer | 1987-06-02 |
| 4658002 | Preparation of insoluble polymer powders which are only slightly swellable | Chung-Ji Tschang, Karlheinz Messmer | 1987-04-14 |
| 4647396 | Copolymers for detergents and cleaning agents | Heinrich Hartmann, Albert Hettche, Ulrich Kaluza, Johannes Perner, Christos Vamvakaris | 1987-03-03 |
| 4647637 | Preparation of insoluble polymer powders which are only slightly swellable | Chung-Ji Tschang, Karlheinz Messmer | 1987-03-03 |
| 4621127 | Preparation of carboxyl-containing polymers | Heinrich Hartmann, Johannes Perner, Hans-Juergen Raubenheimer | 1986-11-04 |
| 4559159 | Copolymers, their preparation and their use as assistants in detergents and cleansing agents | Heinrich Hartmann, Wolfgang Trieselt, Richard W. Mueller, Paul Diessel, Albert Hettche | 1985-12-17 |
| 4532320 | Removal of physiologically unacceptable solvents from polymers containing carboxyl or anhydride groups | Heinrich Hartmann, Gerhard Faulhaber, Hans-Juergen Rauben Heimer | 1985-07-30 |
| 4525581 | Increasing the efficiency of high molecular weight crosslinked polycarboxylic acids | Heinrich Hartmann, Gerhard Faulhaber, Hans-Jurgen Raubenheimer | 1985-06-25 |
| 4451582 | Preparation of insoluble, only slightly swellable polymers of basic vinyl-heterocyclic compounds | Hans-Helmut Goertz, Axel Sanner, Heinrich Hartmann | 1984-05-29 |
| 4444561 | Copolymers which contain basic groups and are used as antiredeposition agents in washing and after-treating textile goods containing synthetic fibers | Wolfgang Trieselt, Johannes Perner, Heinrich Hartmann | 1984-04-24 |
| 4402937 | Preparation of PVP-iodine | Heinrich Hartmann, Wolfgang Schwarz | 1983-09-06 |
| 4370454 | Preparation of maleic anhydride copolymers | Karlheinz Messmer, Hermann Fischer, Heinrich Hartmann, Rolf Schneider, Klaus Wulz +1 more | 1983-01-25 |
| 4345049 | Preparation of polyvinylpyrrolidone-iodine | Ferdinand Straub, Heinrich Hartmann | 1982-08-17 |
| 4320114 | Manufacture of aqueous polyvinylpyrrolidone-iodine solutions | Karl Herrle, Hans-Uwe Schenck | 1982-03-16 |
| 4294873 | Manufacture of paper having a high dry strength and a low wet strength | Juergen Hartmann, Joachim Stedefeder, Sigberg Pfohl | 1981-10-13 |
| 4282342 | Preparation of terpolymers | Claus Cordes | 1981-08-04 |
| 4250289 | Preparation of copolymers from maleic anhydride and alkenes | Claus Cordes | 1981-02-10 |
| 4200710 | Preparation of polyvinylpyrrolidone-iodine | Hans-Uwe Schenck, Wolfgang Schwarz | 1980-04-29 |