Issued Patents All Time
Showing 51–70 of 70 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4405752 | Process for producing fiber-reinforced molded products | Klaus Recker, Gerd Reinecke, Albert Awater, Karl J. Kraft | 1983-09-20 |
| 4390640 | Process for the production of optionally-foamed polyurethanes | Werner Rasshofer, Geza Avar, Hans-Albrecht Freitag, Richard Kopp | 1983-06-28 |
| 4387057 | New diisocyanates containing sulfur and a process for their preparation | Jurgen Schwindt, Otto Ganster, Johannes Franciscus Gerardus Koster | 1983-06-07 |
| 4384102 | Process for the preparation of compounds having s-triazine units and epoxide groups | Werner Rasshofer, Richard Kopp | 1983-05-17 |
| 4377644 | Mixed anhydrides of isocyanates and carboxylic acids, mixtures thereof with carboxylic acids, and the use thereof as blowing agents for the production of cellular plastics | Richard Kopp, Max Mann | 1983-03-22 |
| 4368278 | Process for the production of polyurethanes using cyclic N-hydroxyalkyl-substituted compounds containing amidine groups as catalysts | Werner Rasshofer, Kurt Findeisen | 1983-01-11 |
| 4360603 | Process for the preparation of compounds containing s-triazine units and isocyanate groups or isocyanate-reactive groups and the production of polyurethanes containing these fillers | Werner Rasshofer, Richard Kopp | 1982-11-23 |
| 4350781 | Process for the preparation of polymer precursors containing oxazolin-2-one rings | Werner Rasshofer, Holger Meyborg | 1982-09-21 |
| 4348512 | Polyisocyanate reaction products of diisocyanates and s-triazine derivatives containing amino groups, and polymers therefrom | Holger Meyborg | 1982-09-07 |
| 4336180 | Solvent-free polyurethanes with fibrous reinforcing agents | Klaus Recker | 1982-06-22 |
| 4330656 | Activated isocyanate prepolymers and a process for the production of elastomeric polyurethane resins | Wilhelm Kallert | 1982-05-18 |
| 4325887 | Isocyanatoaryl sulfonic acid esters | — | 1982-04-20 |
| 4294934 | Process for the production of elastic, optionally cellular, polyurethane ureas | Jurgen Schwindt, Otto Ganster, Hans-Joachim Meiners, Hans-Dieter Ruprecht | 1981-10-13 |
| 4276386 | Diisocyanates having urea groups, a process for their preparation and their use in the production of polyurethanes | Jurgen Schwindt | 1981-06-30 |
| 4263408 | Process for the production of molded foams | Holger Meyborg, Werner Mormann, Jurgen Schwindt | 1981-04-21 |
| 4263423 | Process for the preparation of polyurethane casting elastomers | Jurgen Schwindt, Holger Meyborg, Klaus Recker | 1981-04-21 |
| 4259255 | Process for the production of isocyanates | — | 1981-03-31 |
| 4255570 | Polyisocyanate reaction products of diisocyanates and s-triazine derivatives containing amino groups | Holger Meyborg | 1981-03-10 |
| 4254229 | Polyurethane plastics containing thio groups | Jurgen Schwindt, Paul Uhrhan | 1981-03-03 |
| 4189542 | Process for the production of foam moldings having an impervious outer skin using semi-prepolymer prepared from isocyanates such as isophorone diisocyanate | Helmut Kleimann, Holger Meyborg, Hans-Jurgen Lienert | 1980-02-19 |