Issued Patents All Time
Showing 51–75 of 101 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4999414 | Process for the production of aromatic polyether ketones | Joachim Genz, Erhard Tresper, Ludwig Bottenbruch, Volker Eckhardt | 1991-03-12 |
| 4985532 | Thermotropic polyesters, a process for their production and their use for the production of moldings, filaments and films | Ralf Pakull, Dieter Freitag, Volker Eckhardt, Uwe Westeppe | 1991-01-15 |
| 4970286 | Thermotropic, fully aromatic polyesters having a low processing temperature, a process for their production and their use for the production of moldings, filaments, fibers and films | Joachim Genz, Volker Eckhardt, Carl Casser | 1990-11-13 |
| 4954569 | Use of homopolycarbonates of 3,3'-dihydroxydiphenyl ether for modifying films of thermoplastics | Gunther Weymans, Klaus Berg, Ulrich Grigo, Ludwig Bottenbruch | 1990-09-04 |
| 4931534 | Thermotropic aromatic polyesters, a process for their production and their use for the production of moldings, filaments, fibers and films | Ralf Pakull, Volker Eckhardt, Joachim Genz, Hans R. Kricheldorf, Volker Doring | 1990-06-05 |
| 4923957 | Process for the production of aromatic polyesters | Peter Tacke, Ulrich Grigo | 1990-05-08 |
| 4900808 | Process for the production of high molecular weight, optionally branched polyarylene sulphides in polar solvent and lactam | Edgar Ostlinning, Dieter Freitag | 1990-02-13 |
| 4888370 | Flame-resistant polyamides | Dieter Freitag, Thomas Joswig, Heinz-Josef Fullmann, Friedemann Muller | 1989-12-19 |
| 4873314 | Process for the production of polycarbonate solutions | Klaus Berg, Ulrich Grigo | 1989-10-10 |
| 4841000 | Process for the preparation of aromatic polyesters | Peter Tacke, Ulrich Grogp | 1989-06-20 |
| 4822852 | High-impact dimensionally stable polyamide molding compositions | Dieter Wittmann, Uwe Westeppe, Christian Lindner, Josef Merten, Harald Selbeck | 1989-04-18 |
| 4786712 | Process for the preparation of optionally branched polyarylene sulphides having reduced corrosiveness with ketone diluent and organic solvent | Edgar Ostlinning, Rolf-Volker Meyer | 1988-11-22 |
| 4769444 | Flameproof polyamides | Thomas Joswig, Friedemann Muller, Heinz-Josef Fullmann | 1988-09-06 |
| 4762911 | Process for the preparation of high-molecular, optionally branched polyarylene sulphide with sodium sulfide, potassium sulfide and hydrogen sulfide | Edgar Ostlinning, Ludwig Bottenbruch | 1988-08-09 |
| 4760128 | Process for the preparation of high molecular weight, optionally branched polyarylene sulphide with monomercaptan compound | Wolfgang Ebert, Rudiger Schubart | 1988-07-26 |
| 4760127 | Process for the preparation of polyarylene sulphide with monohalogeno aromatic compound and mono mercapto compound | Wolfgang Ebert | 1988-07-26 |
| 4732967 | Polyarylene sulphide having high melt viscosity | Edgar Ostlinning, Dieter Freitag, Wolfgang Alewelt | 1988-03-22 |
| 4665156 | Mono- and biaxially drawable film of polyphenylene sulphide | Klaus Reinking, Edgar Ostlinning | 1987-05-12 |
| 4663430 | Process for the preparation of high molecular weight polyarylene sulphide in the absence of water | Edgar Ostlinning | 1987-05-05 |
| 4661584 | Preparation of polyarylene sulphide in presence of amino carboxylic acid | Edgar Ostlinning, Dieter Freitag, Wolfgang Alewelt | 1987-04-28 |
| 4645825 | Fibres and filaments of polyarylene sulphides | Bernd Willenberg | 1987-02-24 |
| 4631336 | Process for the production of high molecular weight, optionally branched polyarylene sulphide with an ester or anhydride of a carboxylic acid | Edgar Ostlinning, Dieter Freitag | 1986-12-23 |
| 4609699 | Polyarylene sulphides with reduced corrosion | Rolf-Volker Meyer, Klaus Reinking, Rolf Dhein | 1986-09-02 |
| 4598144 | Process for the production of high molecular weight, optionally branched polyarylene sulphides | Edgar Ostlinning, Wolfgang Eisermann, Dieter Freitag | 1986-07-01 |
| 4595748 | Process for the preparation of high molecular weight, optionally branched polyarylene sulphides | Edgar Ostlinning | 1986-06-17 |