Issued Patents All Time
Showing 1–25 of 70 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5574123 | Heat curable, one-component polyurethane reactive compositions | Manfred Bock, Holger Casselmann, Werner Drouve, Richard Kopp, Heinrich Hess | 1996-11-12 |
| 5283364 | Hydrolysis process for polyamines | Werner Rasshofer, Klaus Konig, Hans-Joachim Meiners | 1994-02-01 |
| 5183876 | Urea group-containing polyisocyanates modified with long chain compounds and a process for their preparation | Richard Kopp, Heinrich Hess | 1993-02-02 |
| 5159046 | Process for the preparation of highly elastic plastics | Andreas Ruckes, Richard Kopp, Heinrich Hess, Robert Eiben, James-Michael Barnes | 1992-10-27 |
| 5143987 | Polyurethane reactive adhesive compounds containing finely dispersed polymers | Eduard Hansel, Heinrich Hess, Gunter Arend, Richard Kopp | 1992-09-01 |
| 5109096 | Polyurethane-based one-component reactive adhesives | Heinrich Hess, Richard Kopp, Horst Stepanski, Gunter Arend, Hans Tups | 1992-04-28 |
| 5100998 | Process for improving the flowability of dimerized 2,4-tolylenediisocyanate | Richard Kopp, Heinrich Hess, Lutz Georgias, Helmut Hurnik, Hans-Dieter Thomas | 1992-03-31 |
| 5091497 | Heat-curing polyether-polyester-polyurethane ureas | Richard Kopp, Heinrich Hess, Eduard Hansel, Thomas Scholl | 1992-02-25 |
| 5091582 | Process for the preparation of aromatic polyamines | Josef Sanders, Dieter Dieterich | 1992-02-25 |
| 5077339 | Heat-curing reactive powders based on polyurethanes | Heinrich Hess, Richard Kopp, Werner Rasshofer | 1991-12-31 |
| 5064875 | Process for the preparation of heat-stable polyurethane urea elastomers | Urs Thiery, Andreas Ruckes, Richard Kopp, Heinrich Hess | 1991-11-12 |
| 4994611 | Process for the production of N,N'-bis-(3-aminophenyl)-ureas | Andreas Ruckes, Richard Kopp | 1991-02-19 |
| 4975516 | Diaminoarylsulfones useful for the preparation of polyurethane elastomers | Klaus-Peter Heise, Karlfried Wedemeyer, Dieter Dieterich | 1990-12-04 |
| 4902825 | N,N'-bis(trans-4-isocyanatocyclohexyl)urea, a process for its preparation and its use | Andreas Ruckes, Werner Rasshofer, Richard Kopp | 1990-02-20 |
| 4894429 | Process for the preparation of polyurethanes containing uretdione rings | Heinrich Hess, Richard Kopp | 1990-01-16 |
| 4882409 | Process for the production of heat-resistant polyurethane urea elastomers | Andreas Ruckes, Heinrich Hess | 1989-11-21 |
| 4882361 | Process for the production of polyurethane urea elastomers | Andreas Ruckes, Richard Kopp | 1989-11-21 |
| 4882411 | Process for the production of cold-setting polyurethane urea elastomers | Andreas Ruckes, Heinrich Hess, Richard Kopp | 1989-11-21 |
| 4855504 | Process for producing higher molecular weight amino compounds having reduced monomeric amine content | Werner Rasshofer, Ernst Grigat, Heinrich Hess, Richard Kopp | 1989-08-08 |
| 4851567 | N,N'-bis(5-isocyanatonaphthyl)urea, a process for its production, and its use | Andreas Ruckes, Richard Kopp, Heinrich Hess | 1989-07-25 |
| 4847321 | Process for the production of thermosetting one-component polyurethane-polyurea systems | Heinrich Hess, Richard Kopp, Manfred Bock, Werner Clarenz | 1989-07-11 |
| 4801623 | Process for the production of a thixotropic agent, especially for storable reactive polyurethane systems | Heinrich Hess, Richard Kopp | 1989-01-31 |
| 4797320 | Composite plastic moldings and a process for their production | Richard Kopp, Heinrich Hess, Hermann Schafer, Werner Rasshofer | 1989-01-10 |
| 4786655 | Process for the preparation of polyurethanes containing uretdione rings formed in the presence of a bismuth salt of an organic carboxylic acid | Heinrich Hess, Richard Kopp | 1988-11-22 |
| 4766239 | Process for the in situ production of urea group-containing isocyanates in polyols, dispersions or solutions resulting therefrom and use thereof | Richard Kopp, Heinrich Hess | 1988-08-23 |