Issued Patents All Time
Showing 76–100 of 101 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4585856 | Process for the preparation of polyarylene sulphides | Wolfgang Ebert, Rolf-Volker Meyer, Rudiger Schubart | 1986-04-29 |
| 4537951 | Process for the production of optionally branched polyarylene sulfides | Edgar Ostlinning, Wolfgang Koch, Ludwig Bottenbruch, Walter Heitz | 1985-08-27 |
| 4535149 | Process for the production of polyarylene sulphides | Wolfgang Ebert, Rolf-Volker Meyer, Rolf Dhein | 1985-08-13 |
| 4525579 | Process for the production of optionally branched polyarylene sulphides with polyhalogenated polyaromatic compound | Edgar Ostlinning, Wolfgang Koch, Walter Heitz | 1985-06-25 |
| 4501884 | Process for the production of optionally branched polyarylene sulphide with piperazinone solvent | Edgar Ostlinning | 1985-02-26 |
| 4500702 | Anhydrous preparation of polyarylene sulfide in one vessel reaction system | Edgar Ostlinning | 1985-02-19 |
| 4487698 | Extraction of onium salts from process waters and waste waters | Dieter Freitag, Edgar Ostlinning | 1984-12-11 |
| 4464507 | Process for the production of high molecular weight, optionally branched, polyarylene sulphides | Edgar Ostlinning | 1984-08-07 |
| 4451644 | Process for the production of polyarylene (sulphides) having an increased thermal and chemical resistance and an improved color quality | Edgar Ostlinning, Otto Neuner, Ludwig Bottenbruch | 1984-05-29 |
| 4450266 | Use of siloxanes for the modification of high molecular weight p-polyphenylene sulphides | Dieter Freitag, Josef Merten | 1984-05-22 |
| 4433138 | Process for the preparation of polyarylene sulphides | Dieter Freitag, Ludwig Bottenbruch, Otto Neuner | 1984-02-21 |
| 4424339 | Process for the preparation of polyarylene sulphides | Edgar Ostlinning, Dieter Freitag, Ludwig Bottenbruch | 1984-01-03 |
| 4415692 | Stabilized thermoplastic moulding compositions | Hans-Josef Buysch, Horst Peters, Josef Buekers | 1983-11-15 |
| 4381359 | Stabilized thermoplastic moulding compositions | Hans-Josef Buysch, Dieter Margotte, Horst Peters | 1983-04-26 |
| 4375525 | Use of organic silicon compounds for stabilizing and brightening polycarbonates which are free from phosphites and free from boric acid esters | Wolfgang Cohnen, Dieter Freitag, Ottfried Schlak | 1983-03-01 |
| 4362864 | Process for the preparation of polyarylene sulphides | Dieter Freitag, Ludwig Bottenbruch, Josef Merten | 1982-12-07 |
| 4342681 | Use of organic silicon compounds in combination with oxetane compounds, dioxanes or tetrahydrofuranes for stabilizing and brightening polycarbonates which are free from phosphites and free from boric acid esters | Wolfgang Cohnen, Dieter Freitag | 1982-08-03 |
| 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, Harald Medem, Ludwig Bottenbruch | 1982-06-08 |
| 4331801 | Process for the preparation of polyarylene sulphides | Josef Merten | 1982-05-25 |
| 4327015 | Flame resistant, transparent polycarbonates comprising bisulfite adducts | Frank Druschke, Dieter Margotte, Wolfgang Cohnen | 1982-04-27 |
| 4316980 | Process for the preparation of tetramethylated bisphenol polycarbonates | Volker Serini, Dieter Freitag, Gerd Fengler | 1982-02-23 |
| 4303781 | Process for the preparation of polyarylene sulphides | Josef Merten | 1981-12-01 |
| 4233431 | Polycondensates containing hydroxyquinoline end groups, their use for the preparation of polymers containing metals and metal containing polycondensates | Hugo Vernaleken, Dieter Freitag, Gunther Reiff, Hans Rudolph | 1980-11-11 |
| 4212774 | Recovery of high-quality polycarbonate from polycarbonate scrap | — | 1980-07-15 |
| 4208489 | Polycarbonate molding compositions with improved flame-repellency | Manfred Schmidt, Wolfgang Cohnen, Frank Kleiner, Dieter Freitag | 1980-06-17 |