Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7241841 | Hydrogenated copolymers of unsubstituted and substituted conjugated dienes | Cristina Stere, Werner Obrecht, Udo Sondermann | 2007-07-10 |
| 6706830 | Copolymerization of conjugated dienes with non-conjugated olefins by means of rare earth catalysts | Heike Windisch, Rudolf Taube, Steffen Maiwald, Jurgen Giesemann, Thomas Rosenstock | 2004-03-16 |
| 6576727 | Catalyst system for gas phase polymerization of conjugated dienes | Michael Dauben, Jürgen Schneider, Nobert Steinhauser | 2003-06-10 |
| 6350833 | Method for the suspension polymerization of conjugated dienes | Thomas Knauf, Claudia Schmid, Akhtar Osman | 2002-02-26 |
| 6344527 | Method for the production of polydienes with regulated mooney viscosity | Gunter Marwede | 2002-02-05 |
| 6284697 | Compounds of the rare earths and their use as polymerization catalysts for unsaturated compounds | Heike Windisch, Rudolf Taube, Steffen Maiwald | 2001-09-04 |
| 6093674 | Supported cobalt catalyst, production thereof and use thereof for the polymerization of unsaturated compounds | Heike Windisch | 2000-07-25 |
| 5958820 | Gas-phase polymerisation of conjugated dienes in the presence of rare earth allyl compounds | Rudolf Taube, Steffen Maiwald, Thomas Ruhmer, Heike Windisch, Jurgen Giesemann | 1999-09-28 |
| 5914377 | Method for the production of diene rubbers in the gas phase | Hugo Vernaleken | 1999-06-22 |
| 5908904 | Catalyst its production and its use for the gas-phase polymerization of conjugated dienes | Hugo Vernaleken | 1999-06-01 |
| 5877109 | Catalyst for the gas-phase polymerisation of conjugated dienes | Karl-Heinz Reichert, Peter Marquardt, Christopher Eberstein, Birgit Garmatter | 1999-03-02 |
| 5858903 | Catalyst, its production and its use for the gas-phase polymerization of conjugated dienes | Hugo Vernaleken | 1999-01-12 |
| 5298577 | Continuous process for the production of ethylene/vinyl ester terpolymers | Wolfgang Baade, Werner Obrecht, Christian Ohm, Rudolf Casper, Kurt P. Neurer | 1994-03-29 |
| 5135988 | Process for the preparation of ethylene/vinyl acetate copolymers with reduced tendency to tackiness, new ethylene/vinyl acetate copolymers and their use | Kurt P. Meurer, Christian Ohm, Hugo Zimmermann, Herbert Bartl | 1992-08-04 |
| 5023299 | Polyolefinecarboxylic acids, their preparation and their use for preparing polyolefine-polycarbonate block copolymers | Kurt P. Meuer, Helmut Waniczek, Josef Witte | 1991-06-11 |
| 4937303 | Solution polymerization for the preparation of gel-free ethylene/vinyl acetate copolymers | Bernhard Wolf, Bernhard Will, Werner Obrecht, Rudolf Casper, Wolfgang Baade +2 more | 1990-06-26 |
| 4929689 | Polyolefinecarboxylic acids, their preparation and their use for preparing polyolefine-polycarbonate block copolymers | Kurt P. Meurer, Helmut Waniczek, Josef Witte | 1990-05-29 |
| 4798873 | Polyolefinecarboxylic acids, their preparation and their use for preparing polyolefine-polycarbonate block copolymers | Kurt P. Meurer, Helmut Waniczek, Josef Witte | 1989-01-17 |
| 4751275 | Process and catalyst for the preparation of syndiotactic 1,2,-polybutadiene | Josef Witte, Bernd Stollfuss | 1988-06-14 |
| 4279697 | Method of and apparatus for shutting down a gas-cooled nuclear reactor | Theodor Overhoff, Rudolf Schulten, Jasbir Singh, Josef Witte | 1981-07-21 |
| 4260707 | Solution polymerization of conjugated dienes | Josef Witte, Gunter Marwede | 1981-04-07 |
| 4242232 | Catalyst and its preparation and use for the solution polymerization of conjugated dienes | Josef Witte, Gunter Marwede | 1980-12-30 |
| 4216121 | Catalyst, its preparation and use in the polymerization of butadiene | Manfred Beck, Josef Witte, Gottfried Pampus | 1980-08-05 |
| 4189558 | Process for the production of butadiene-propylene copolymers | Josef Witte, Gunter Marwede | 1980-02-19 |