Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6423817 | Inherently light- and heat-stabilized polyamides | Klaus Weinerth, Karlheinz Mell, Ludwig Beer | 2002-07-23 |
| 5149758 | Continuous production of polycaprolactam having a regulated amino end group content | — | 1992-09-22 |
| 4540772 | Continuous preparation of nylon from aqueous salt solution in precondensation zone having baffles | Gunter Pipper, Franz Schmidt, Rainer Theysohn, Siegfried Riegger, Eduard Heil +2 more | 1985-09-10 |
| 4354020 | Continuous preparation of polycaprolactam in vertical tubular reactor | Rudi-Heinz Rotzoll, Guenter Valentin, Werner Hoerauf | 1982-10-12 |
| 4251653 | Manufacture of nylon by adding liquid diamine to aqueous polyamide forming salt solution | Albrecht Eckell, Georg Pilz, Rudi-Heinz Rotzoll | 1981-02-17 |
| 4213884 | Manufacture of a highly concentrated aqueous solution of a dicarboxylic acid diamine salt and a nylon precondensate | Albrecht Eckell, Georg Pilz, Rudi-Heinz Rotzoll | 1980-07-22 |
| 4204049 | Hydrolytic polymerization of epsilon-caprolactam | Joachim Kunde, Werner Hoerauf | 1980-05-20 |