Issued Patents All Time
Showing 51–75 of 83 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4537951 | Process for the production of optionally branched polyarylene sulfides | Karsten-Josef Idel, Edgar Ostlinning, Wolfgang Koch, Walter Heitz | 1985-08-27 |
| 4533702 | Aromatic polyester carbonates having a high notched impact strength and a process for the production thereof | Dieter Freitag, Manfred Schmidt | 1985-08-06 |
| 4518747 | Polycarbonates having terminal groups which contain conjugated double bonds | Wolfgang Stix, Dieter Neuray | 1985-05-21 |
| 4508890 | Process for the preparation of thermoplastic aromatic polyphosphonatocarbonates with improved heat-aging resistance, and their use | Manfred Schmidt, Dieter Freitag | 1985-04-02 |
| 4481350 | Process for the preparation of thermoplastic aromatic polyphosphonates containing small proportions of carbonate structures and product thereof | Manfred Schmidt, Dieter Freitag | 1984-11-06 |
| 4473686 | Block copolymers | Ulrich Grigo, Karl-Heinz Köhler, Rudolf Binsack, Leo Morbitzer, Josef Merten +1 more | 1984-09-25 |
| 4451644 | Process for the production of polyarylene (sulphides) having an increased thermal and chemical resistance and an improved color quality | Edgar Ostlinning, Karsten-Josef Idel, Otto Neuner | 1984-05-29 |
| 4433138 | Process for the preparation of polyarylene sulphides | Karsten-Josef Idel, Dieter Freitag, Otto Neuner | 1984-02-21 |
| 4424339 | Process for the preparation of polyarylene sulphides | Karsten-Josef Idel, Edgar Ostlinning, Dieter Freitag | 1984-01-03 |
| 4415719 | Thermoplastic, branched aromatic polyphosphonates, and a process for their production | Manfred Schmidt, Dieter Freitag, Klaus Reinking, Harry Rohr, Hans-Dieter Block | 1983-11-15 |
| 4413072 | Mixtures of polyurethanes and unsaturated polyester resins | Bernhard Hess, Hansjochen Schulz-Walz, Hannes von Harpe, Bernd Peltzer | 1983-11-01 |
| 4404363 | Separation of diphasic mixtures containing aromatic polyesters | Dieter Freitag, Volker Serini, John Goossens, Uwe Hucks | 1983-09-13 |
| 4401802 | Process for the preparation of thermoplastic aromatic polyphosphonatocarbonates with improved heat-ageing resistance, and their use | Manfred Schmidt, Dieter Freitag | 1983-08-30 |
| 4393009 | Process for the preparation of aromatic dicarboxylic acid dichlorides | Dieter Freitag, Claus Wulff | 1983-07-12 |
| 4387251 | Process for the preparation of pure 4,4'-dihydroxyphenyl alkanes or 4,4'-dihydroxydiphenyl cycloalkanes | Karl-Heinrich Meyer, Wolfgang Jakob | 1983-06-07 |
| 4382898 | Process for the production of aromatic carboxylic acid chlorides | Udo Rudolph, Dieter Freitag, Manfred Schmidt | 1983-05-10 |
| 4382131 | Thermoplastic block copolyesters, a process for their production and their use for the production of mouldings | Rudolf Binsack, Karl-Heinz Köhler, Leo Morbitzer, Walter Heitz | 1983-05-03 |
| 4382041 | Process for the production of aromatic carboxylic acid chlorides | Udo Rudolph, Manfred Schmidt, Dieter Freitag | 1983-05-03 |
| 4381390 | Thermoplastic polyphosphonatophenyl ester carbonate from aryloxycarbonyloxy-benzoic acid aryl ester and preparation thereof | Manfred Schmidt | 1983-04-26 |
| 4374971 | Process for the preparation of thermoplastic aromatic polyphosphonates with improved thermal ageing resistance | Manfred Schmidt, Dieter Freitag | 1983-02-22 |
| 4362864 | Process for the preparation of polyarylene sulphides | Karsten-Josef Idel, Dieter Freitag, Josef Merten | 1982-12-07 |
| 4338429 | Process for working up polycarbonates | Volker Serini, John Goossens, Dieter Freitag | 1982-07-06 |
| 4334053 | Process for the preparation of aromatic polyesters and the use thereof for the production of injection molded articles, films and coatings | Dieter Freitag, Klaus Reinking, Karsten-Josef Idel, Harald Medem | 1982-06-08 |
| 4331573 | Aqueous dispersions of urethane-modified polyesters, a process for their production and their use for the production of lacquers | Karl Zabrocki, Franz Weider | 1982-05-25 |
| 4331614 | Aromatic polyphosphonates and a process for their production | Manfred Schmidt, Dieter Freitag, Klaus Reinking, Harry Rohr, Hans-Dieter Block | 1982-05-25 |