Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5306805 | Process for the preparation of polyarylene sulphides | Wolfgang Arlt, Wolfgang Alewelt, Karl-Heinrich Meyer, Manfred Schmidt, Erhard Tresper | 1994-04-26 |
| 5247063 | Process for the purification of polyarylene sulphides | Wolfgang Alewelt, Franz Alfes, Erhard Tresper | 1993-09-21 |
| 4895930 | Process for isolating polyarylene sulphides | Franz Alfes, Wolfgang Alewelt, Erhard Tresper | 1990-01-23 |
| 4771120 | Polyarylene sulphide capped with monophenol compound | Wolfgang Alewelt, Franz Alfes, Wolfgang Jakob, Erhard Tresper | 1988-09-13 |
| 4734484 | Process for the isolation of polyarylene sulphide from salts contained therein | Franz Alfes, Wolfgang Alewelt, Erhard Tresper | 1988-03-29 |
| 4639507 | Process for the isolation of polyarylene sulphide | Wolfgang Alewelt, Karl-Heinrich Meyer, Erhard Tresper, Martin Ullrich | 1987-01-27 |
| 4598144 | Process for the production of high molecular weight, optionally branched polyarylene sulphides | Edgar Ostlinning, Karsten-Josef Idel, Dieter Freitag | 1986-07-01 |
| 4588809 | Process for isolating pulverulent chlorinated aliphatic polymers from their aliphatic chlorohydrocarbon solutions | Karl-Heinrich Meyer, Diez Heine, Franz Alfes | 1986-05-13 |