Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8273846 | Polyurethane and polyurethane urea elastomers based on polycarbonate polyols | Hartmut Nefzger, Manfred Schmidt, Jens Krause | 2012-09-25 |
| 8242229 | Polyurethanes cured with amines and their preparation | Jens Krause, Manfred Schmidt, Wieland Hovestadt | 2012-08-14 |
| 8110704 | Process for the production of stable polymers | Hartmut Nefzger, Erika Bauer, Stefan Penninger, Thomas W. Schultz, Heinrich Lutz +2 more | 2012-02-07 |
| 7951896 | Process for the production of NCO prepolymers that are stable to sedimentation, and their use | Hartmut Nefzger, Manfred Schmidt, Ernst Felske, Jens Krause | 2011-05-31 |
| 7763683 | Polyester polyols, a process for the production thereof and the use thereof | Hartmut Nefzger, Gerhard Klein, Manfred Schmidt, Jens Krause, Erika Bauer | 2010-07-27 |
| 6977290 | Process for preparing oligomeric aliphatic diols, polycarbonatediols based thereon and prepolymers thereof | Hartmut Nefzger, Erika Bauer, Manfred Schmidt, Hans-Dieter Ruprecht | 2005-12-20 |
| 6809172 | Polyester polyols and the use of polyester for producing PUR cast elastomers that have an improved resistance to hydrolysis | Michael Schneider, Andreas Hoffmann | 2004-10-26 |
| 6667370 | Method for producing prepolymers containing isocyanate end groups, incorporating a small proportion of base isocyanates | Manfred Schmidt, Stefan Wershofen, Andreas Hoffmann | 2003-12-23 |
| 6177494 | N,N'-disubstituted N-(2-hydroxyalkyl)-ureas | Richard Kopp, Hans-Dieter Ruprecht, Hans-Georg Wussow | 2001-01-23 |
| 5159046 | Process for the preparation of highly elastic plastics | Gerhard Grogler, Andreas Ruckes, Richard Kopp, Heinrich Hess, Robert Eiben | 1992-10-27 |
| RE33748 | Process for the preparation of polyurethane plastics using dianhydro-hexite diols | Holger Meyborg, Kuno Wagner, Herbert Salzburg | 1991-11-19 |
| 4808691 | Polyether-polycarbonate diols and processes for their production and use | Klaus Konig | 1989-02-28 |
| 4755334 | Process for the continuous production of articles or coatings with contours of complicated shape | Wolfgang Grimm | 1988-07-05 |
| 4639478 | Bismorpholines, a process for their preparation and their use for protection against hydrolysis | Peter Haas, Wilhelm Goyert | 1987-01-27 |
| 4619985 | Process for the production of deactivated suspensions of finely-divided polyisocyanates in relatively high molecular weight compounds, deactivated suspensions and use thereof for the production of polyurethanes | Heinrich Hess, Gerhard Grogler, Richard Kopp | 1986-10-28 |
| 4617387 | Bismorpholines and a process for their preparation | Peter Haas, Wilhelm Goyert | 1986-10-14 |
| 4605729 | Process for the production of polyetherester polyols and the products and use thereof | Werner Betz | 1986-08-12 |
| 4592957 | Microcapsules having walls of polyaddition products of water-insoluble polyamines with water-soluble polyisocyanate adducts | Manfred Dahm, Norbert Weimann, Ulrich Nehen, Hanns P. Muller, Gert Jabs +1 more | 1986-06-03 |
| 4517141 | Production of microcapsules having walls of polyaddition products of water-insoluble polyamines with water-soluble polyisocyanate adducts | Manfred Dahm, Norbert Weimann, Ulrich Nehen, Hanns P. Muller, Gert Jabs +1 more | 1985-05-14 |
| 4476253 | Process for the preparation of polyurethane elastomers using diols of the anhydro-tetritol series | Herbert Salzburg, Holger Meyborg, Wilhelm Goyert | 1984-10-09 |
| 4423200 | Process for the production of polyurethane urea products | Otto Ganster | 1983-12-27 |
| 4383051 | Process for the preparation of polyurethane plastics using dianhydro-hexite diols | Holger Meyborg, Kuno Wagner, Herbert Salzburg | 1983-05-10 |