Issued Patents All Time
Showing 26–50 of 70 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4757105 | Process for the production of finely divided polyisocyanates containing urea groups | Richard Kopp, Heinrich Hess, Klaus Konig | 1988-07-12 |
| RE32677 | Polyamines, a process for the production of polyamines and their use in the production of polyurethanes | Werner Rasshofer, Klaus Konig, Dieter Dieterich | 1988-05-24 |
| 4734532 | Process for the preparation of 4,4'-dinitrodibenzyls | Richard Kopp, Klaus Konig, Manfred Schmidt | 1988-03-29 |
| 4720545 | Process for the preparation of complexes of one mol of dimerized or low-oligodimerized 4,4'-diisocyanatodiphenylmethane and two to three mol of 4,4'-diisocyanatodiphenylmethane, corresponding complexes, and their use for polyurethane production | Richard Kopp, Heinrich Hess | 1988-01-19 |
| 4716182 | Cold setting compositions, a process for the production thereof and the use thereof for polyurethane production | Heinrich Hess, Richard Kopp | 1987-12-29 |
| 4704447 | Polyhydroxy compounds containing urea groups and either ester or amide groups, process for their preparation, and the use thereof | Gerhard Balle, Walter Meckel | 1987-11-03 |
| 4680367 | Process for the production of urea group-containing polyisocyanates | Richard Kopp, Heinrich Hess, Klaus Konig | 1987-07-14 |
| 4667008 | Process for the production of solid polyisocyanates of retarded reactivity, polymer-coated, finely divided polyisocyanates and their use | Richard Kopp, Heinrich Hess | 1987-05-19 |
| 4665177 | Tetrahydropyrimidines, a process for their production and their use as catalysts in the production of polyurethane plastics | Werner Rasshofer, Richard Kopp | 1987-05-12 |
| 4663415 | Process for the preparation of stabilized polyamines, stabilized polyamines with retarded reactivity and their use for polyurethane production | Richard Kopp, Heinrich Hess, Werner Rasshofer | 1987-05-05 |
| 4623686 | Storage stable compositions based on polyvinyl chloride plastisols and stabilized isocyanates | Helmut Hurnik, Heinrich Hess, Richard Kopp | 1986-11-18 |
| 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, Richard Kopp, James-Michael Barnes | 1986-10-28 |
| 4605756 | Process for the in situ production of urea group-containing isocyanates in polyols | Richard Kopp, Heinrich Hess | 1986-08-12 |
| 4595445 | Adhesive joining of surfaces using thermosetting polyurethane urea reactive adhesive compositions | Rudolf Hombach, Manfred Dollhausen, Heinrich Hess, Richard Kopp, Artur Reischl | 1986-06-17 |
| 4587275 | Process for the preparation of polyurethane elastomers | Richard Kopp, Holger Meyborg, Jurgen Schwindt | 1986-05-06 |
| 4569982 | Process for the production of polyurea-elastomers and corresponding elastomers having an idealized segment structure | Heinrich Hess, Richard Kopp, Werner Rasshofer | 1986-02-11 |
| 4546165 | Process for the production of stabilized polyisocyanates of retarded reactivity and their use in the production of polyurethanes | Heinrich Hess, Richard Kopp | 1985-10-08 |
| 4540720 | Polyamines, a process for the production of polyamines and their use in the production of polyurethanes | Werner Rasshofer, Klaus Konig, Dieter Dieterich | 1985-09-10 |
| 4521338 | Process for the preparation of low molecular weight 4,4'-diphenylmethane-uretdione-diisocyanates | Richard Kopp | 1985-06-04 |
| 4520186 | Polyurethanes and polyurethane-ureas based on aromatic uret dione diamine adducts | Heinrich Hess, Richard Kopp | 1985-05-28 |
| 4496491 | Aromatic diisocyanates containing N,N-disubstituted sulfonamide groups and processes for their production | Richard Kopp, Helmut Reiff, Dieter Dieterich | 1985-01-29 |
| 4483974 | Process for the production of stabilized polyisocyanates, the polyisocyanates so-stabilized and their use in the production of polyurethanes | Heinrich Hess, Richard Kopp | 1984-11-20 |
| 4472568 | Process for the preparation of polyamines from N-monoaryl-N',N'-dialkyl urea compounds and their use for the synthesis of polyurethanes | Werner Rasshofer | 1984-09-18 |
| 4442280 | Heterogeneous systems of polyol/diphenyl methane uret dione diisocyanates and a process for their production | Wilhelm Kallert | 1984-04-10 |
| 4438250 | Suspensions of isocyanato ureas in isocyanate prepolymers, a process for their production and their use in the production of high molecular-weight polyurethane plastics | Otto Ganster, Klaus Recker | 1984-03-20 |