Issued Patents All Time
Showing 126–150 of 181 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4564669 | Thermotropic aromatic polyesters having a high tenacity and an improved melt viscosity, and mouldings, filaments, fibres and films thereof | Hans-Rudolf Dicke, Manfred Schmidt, Aziz El-Sayed, Ulrich Biskup, Ludwig Bottenbruch | 1986-01-14 |
| 4533702 | Aromatic polyester carbonates having a high notched impact strength and a process for the production thereof | Ludwig Bottenbruch, Manfred Schmidt | 1985-08-06 |
| 4508890 | Process for the preparation of thermoplastic aromatic polyphosphonatocarbonates with improved heat-aging resistance, and their use | Manfred Schmidt, Ludwig Bottenbruch | 1985-04-02 |
| 4491656 | Polyphosphates and process of preparation | Volker Serini, Bernhard Schulte, Hans-Dieter Block | 1985-01-01 |
| 4487698 | Extraction of onium salts from process waters and waste waters | Karsten-Josef Idel, Edgar Ostlinning | 1984-12-11 |
| 4482693 | Polyphosphates and the production thereof | Volker Serini, Paul J. Mayska, Hans-Dieter Block | 1984-11-13 |
| 4482694 | High molecular weight aromatic polyesters and processes for their production | Uwe Hucks, Hans-Jurgen Meissner | 1984-11-13 |
| 4481350 | Process for the preparation of thermoplastic aromatic polyphosphonates containing small proportions of carbonate structures and product thereof | Manfred Schmidt, Ludwig Bottenbruch | 1984-11-06 |
| 4481338 | Flame-resistant polymer mixtures | Volker Serini, Werner Nouvertne | 1984-11-06 |
| 4463130 | Flame-resistant polymer mixtures | Volker Serini, Horst Peters, Udo Rudolph, Josef Buekers, Werner Nouvertne | 1984-07-31 |
| 4450266 | Use of siloxanes for the modification of high molecular weight p-polyphenylene sulphides | Karsten-Josef Idel, Josef Merten | 1984-05-22 |
| 4450249 | Internal antistatic agents for polycarbonates and for polycarbonate films | Manfred Schmidt, Joachim Wank, Eckart Reese, Klaus Wangermann, Wolfgang Cohnen | 1984-05-22 |
| 4433138 | Process for the preparation of polyarylene sulphides | Karsten-Josef Idel, Ludwig Bottenbruch, Otto Neuner | 1984-02-21 |
| 4424339 | Process for the preparation of polyarylene sulphides | Karsten-Josef Idel, Edgar Ostlinning, Ludwig Bottenbruch | 1984-01-03 |
| 4415719 | Thermoplastic, branched aromatic polyphosphonates, and a process for their production | Manfred Schmidt, Ludwig Bottenbruch, Klaus Reinking, Harry Rohr, Hans-Dieter Block | 1983-11-15 |
| 4405554 | Use of hydrogenated polybenzyls as a mould-release agent for aromatic polyesters | Klaus Reinking, Peter Tacke | 1983-09-20 |
| 4404363 | Separation of diphasic mixtures containing aromatic polyesters | Volker Serini, John Goossens, Ludwig Bottenbruch, Uwe Hucks | 1983-09-13 |
| 4401802 | Process for the preparation of thermoplastic aromatic polyphosphonatocarbonates with improved heat-ageing resistance, and their use | Manfred Schmidt, Ludwig Bottenbruch | 1983-08-30 |
| 4393009 | Process for the preparation of aromatic dicarboxylic acid dichlorides | Ludwig Bottenbruch, Claus Wulff | 1983-07-12 |
| 4382898 | Process for the production of aromatic carboxylic acid chlorides | Udo Rudolph, Ludwig Bottenbruch, Manfred Schmidt | 1983-05-10 |
| 4382041 | Process for the production of aromatic carboxylic acid chlorides | Udo Rudolph, Manfred Schmidt, Ludwig Bottenbruch | 1983-05-03 |
| 4375525 | Use of organic silicon compounds for stabilizing and brightening polycarbonates which are free from phosphites and free from boric acid esters | Karsten-Josef Idel, Wolfgang Cohnen, Ottfried Schlak | 1983-03-01 |
| 4374971 | Process for the preparation of thermoplastic aromatic polyphosphonates with improved thermal ageing resistance | Manfred Schmidt, Ludwig Bottenbruch | 1983-02-22 |
| 4371691 | Preparation of polycarbonate from specific crude bisphenols | Gerhard Friedhofen, Volker Serini, Rainer Neumann, Hans-Helmut Schwarz | 1983-02-01 |
| 4366276 | Flame-resistant moulding materials based on thermoplastic aromatic polyesters and polyesters carbonates, a process for their production and their use in the production of moulded bodies | Werner Nouvertne, Klaus Reinking, Peter Tacke, Frank Kleiner, Manfred Schmidt | 1982-12-28 |