Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6020386 | Process for the production of hydroxyfunctional compounds from (polyurethane) polyurea waste | Thomas Munzmay, Walter Meckel, Ulrich Liman, Hartmut Nefzger, Werner Rasshofer +1 more | 2000-02-01 |
| 5274114 | Preparation and use of 3, (4)-substituted pyrrolidines as catalysts for the polyisocyanate polyaddition process | Richard Weider, Uwe Scholz | 1993-12-28 |
| 5262448 | Process for the preparation of polyurea elastomers containing urethane groups | Hans-Joachim Meiners, Heinrich Boden, Manfred Schmidt | 1993-11-16 |
| 5238973 | Process for the preparation of polyurea elastomers containing urethane groups | Eduard Mayer, Manfred Schmidt, Hans-Joachim Meiners | 1993-08-24 |
| 5159046 | Process for the preparation of highly elastic plastics | Gerhard Grogler, Richard Kopp, Heinrich Hess, Robert Eiben, James-Michael Barnes | 1992-10-27 |
| 5064875 | Process for the preparation of heat-stable polyurethane urea elastomers | Gerhard Grogler, Urs Thiery, Richard Kopp, Heinrich Hess | 1991-11-12 |
| 5063252 | Process for the production of plastics by the polyisocyanate polyaddition process and catalysts suitable for this process | Martin Brock, Richard Weider | 1991-11-05 |
| 5017623 | Process for the preparation of polyurethane foams | Peter Haas, Hans Hettel | 1991-05-21 |
| 4994611 | Process for the production of N,N'-bis-(3-aminophenyl)-ureas | Gerhard Grogler, Richard Kopp | 1991-02-19 |
| 4902825 | N,N'-bis(trans-4-isocyanatocyclohexyl)urea, a process for its preparation and its use | Werner Rasshofer, Richard Kopp, Gerhard Grogler | 1990-02-20 |
| 4882411 | Process for the production of cold-setting polyurethane urea elastomers | Gerhard Grogler, Heinrich Hess, Richard Kopp | 1989-11-21 |
| 4882361 | Process for the production of polyurethane urea elastomers | Gerhard Grogler, Richard Kopp | 1989-11-21 |
| 4882409 | Process for the production of heat-resistant polyurethane urea elastomers | Gerhard Grogler, Heinrich Hess | 1989-11-21 |
| 4851567 | N,N'-bis(5-isocyanatonaphthyl)urea, a process for its production, and its use | Gerhard Grogler, Richard Kopp, Heinrich Hess | 1989-07-25 |
| 4843107 | Process for the preparation of polyamines and their use for the preparation of polyurethanes | Werner Rasshofer, Klaus Konig, Richard Kopp | 1989-06-27 |
| 4843108 | Process for the production of polyamines | Werner Rasshofer, Klaus Konig, Richard Kopp | 1989-06-27 |
| 4835224 | Process for the preparation of polyamines and their use for the production of polyurethanes | Werner Rasshofer, Klaus Konig, Richard Kopp | 1989-05-30 |