Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4656199 | Process for the production of matte, non-blocking, thin-walled molded articles from linear thermoplastic polyurethane elasotomers containing polyadducts and their use | Wilhelm Goyert, Bernd Quiring, Hans Wagner | 1987-04-07 |
| 4511680 | Process for the continuous high temperature glycolytic cleavage of polyurethane plastics waste in screw machines | Ernst Grigat | 1985-04-16 |
| 4399236 | Process for separating polyurethane hydrolyzates into polyether and diamine | Norbert Roemer, Jurgen Schenk, Hartmut Hetzel, Ernst Grigat | 1983-08-16 |
| 4371684 | Thermoplastic polyurethanes for processing in extruders and/or on calenders | Bernd Quiring, Wilhelm Goyert, Hans Wagner | 1983-02-01 |
| 4342847 | Process for the production of thermoplastic synthetic materials | Wilhelm Goyert, Ernst Meisert, Wolfgang Grimm, Alfred Eitel, Hans Wagner +1 more | 1982-08-03 |
| 4286080 | Extrusion process for the preparation of polyurethane ureas | Bernd Quiring, Wolfgang Wenzel, Hans Wagner, Wilhelm Goyert | 1981-08-25 |
| 4282367 | Process for the separation of polyurethane foam hydrolysates into polyol and diamine | Norbert Roemer, Ernst Grigat | 1981-08-04 |
| 4261946 | Process for the production of thermoplastic polymer by introducing thermoplastic polymer into an extruder and adding organic polyisocyanate and chain lengthening agent | Wilhelm Goyert, Ernst Meisert, Wolfgang Grimm, Alfred Eitel, Hans Wagner +1 more | 1981-04-14 |
| 4250292 | Process for the preparation of polyurethane elastomers in which at least two reactant portions are introduced into separate positions of a screw machine | Wilhelm Goyert, Ernst Meisert, Alfred Eitel, Hans Wagner, Hans Hespe | 1981-02-10 |
| 4245081 | Process for the production of thermoplastic polyurethane elastomers | Bernd Quiring, Wilhelm Goyert, Hans Wagner | 1981-01-13 |