Issued Patents All Time
Showing 151–175 of 181 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4362864 | Process for the preparation of polyarylene sulphides | Karsten-Josef Idel, Ludwig Bottenbruch, Josef Merten | 1982-12-07 |
| 4348542 | Process for the production of mixtures of alkylated aromatic hydroxy compounds | Volker Serini, Rainer Neumann, Gerhard Friedhofen, Jürgen Heuser, Hans-Helmut Schwarz | 1982-09-07 |
| 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 | Karsten-Josef Idel, Wolfgang Cohnen | 1982-08-03 |
| 4338429 | Process for working up polycarbonates | Volker Serini, John Goossens, Ludwig Bottenbruch | 1982-07-06 |
| 4333809 | Cross-linkable polycarbonate elastomers, a process for their preparation and use for packaging medicines | Manfred Schreckenberg, Hans-Heribert Burgdorfer, Gunther Lehnert, Siegfried Adelmann, Hans Rudolph | 1982-06-08 |
| 4334053 | Process for the preparation of aromatic polyesters and the use thereof for the production of injection molded articles, films and coatings | Klaus Reinking, Karsten-Josef Idel, Harald Medem, Ludwig Bottenbruch | 1982-06-08 |
| 4331614 | Aromatic polyphosphonates and a process for their production | Manfred Schmidt, Ludwig Bottenbruch, Klaus Reinking, Harry Rohr, Hans-Dieter Block | 1982-05-25 |
| 4328174 | Aromatic polyester phosphonates | Manfred Schmidt, Ludwig Bottenbruch, Klaus Reinking, Harry Rohr, Harald Medem | 1982-05-04 |
| 4322373 | Process for the preparation of aromatic dicarboxylic acid dichlorides | Manfred Schmidt | 1982-03-30 |
| 4322520 | Aromatic thermoplastic polyphosphonatocarbonate | Manfred Schmidt, Ludwig Bottenbruch, Werner Nouvertne | 1982-03-30 |
| 4316980 | Process for the preparation of tetramethylated bisphenol polycarbonates | Karsten-Josef Idel, Volker Serini, Gerd Fengler | 1982-02-23 |
| 4308216 | Process for the preparation of aromatic dicarboxylic acid dichlorides | Manfred Schmidt, Ludwig Bottenbruch | 1981-12-29 |
| 4307039 | Process for the preparation of aromatic dicarboxylic acid dichlorides | Manfred Schmidt | 1981-12-22 |
| 4297455 | Process for the preparation of carbonic acid aryl esters of polyester-diols lengthened via carbonate groups and their use for the preparation of polyester-diol bis-diphenol carbonates and polyester/polycarbonates | Christian Lindner, Carlhans Suling, Herbert Bartl, Manfred Schreckenberg, Klaus Konig | 1981-10-27 |
| 4281101 | Process for the preparation of aliphatic-aromatic polycarbonates with diphenol carbonate end groups and their use for the preparation of high-molecular, segmented, aliphatic-aromatic polycarbonate elastomers which can be processed as thermoplastics | Manfred Schreckenberg, Klaus Konig, Gunther Lehnert, Christian Lindner | 1981-07-28 |
| 4269964 | Polycarbonates with alkylphenyl end groups, their preparation and their use | Werner Nouvertne, Claus Burkhardt, Frank Kleiner | 1981-05-26 |
| 4268648 | Resol resins prepared using butanol and tri-alkali metal phosphate | Wolfgang Beer, Ferdinand Senge | 1981-05-19 |
| 4267303 | Process for the preparation of polymers with diphenol carbonate end groups | Klaus Konig, Manfred Schreckenberg, Christian Lindner, Carlhans Suling | 1981-05-12 |
| 4260695 | Process for the preparation of aromatic polyesters | Harald Medem, Klaus Reinking | 1981-04-07 |
| 4260704 | Resins based on novolaks, their production and their use as tackifiers | Manfred Schmidt, Theo Kemperman, Hermann Fries, Erich Esch | 1981-04-07 |
| 4233431 | Polycondensates containing hydroxyquinoline end groups, their use for the preparation of polymers containing metals and metal containing polycondensates | Karsten-Josef Idel, Hugo Vernaleken, Gunther Reiff, Hans Rudolph | 1980-11-11 |
| 4232134 | Process for isolating boron-containing phenol/formaldehyde resins | Manfred Schmidt, Eberhard Bandtel, Walter Traudisch, Georg Spott | 1980-11-04 |
| 4225698 | Optical components consisting of aromatic polyesters molded in the form of an optical lens | Harald Medem, Hans Hespe, Carl Heynemann | 1980-09-30 |
| 4221645 | Polycarbonates with end groups containing double bonds which can be crosslinked by UV light | Siegfried Adelmann, Dieter Margotte, Hans J. Rosenkranz, Hugo Vernaleken, Werner Nouvertne | 1980-09-09 |
| 4217297 | Process for the preparation of carbonic acid aryl esters of polyester-diols lengthened via carbonate groups | Christian Lindner, Carlhans Suling, Herbert Bartl, Manfred Schreckenberg, Klaus Konig | 1980-08-12 |