Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4990595 | Process for lowering the melt viscosity of aromatic polycarbonates, aromatic polyester carbonates and aromatic and/or araliphatic polyesters with super-critical gases | Hans-Joachim Traechkner, Wolfgang Wehnert, Claus Wulff, Wolfgang Arlt, Hanns-Ingolf Paul | 1991-02-05 |
| 4352568 | Twin-screw machine with screws rotatable in the same direction | Martin Ullrich, Erhard Tresper | 1982-10-05 |
| 4312642 | Method for the separate discharge of the individual phase streams of a multiple phase flow | Gunter Lehr, Uwe Hucks, Hugo Vernaleken | 1982-01-26 |