Issued Patents All Time
Showing 126–150 of 186 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5059643 | Stabilized polyamides | Hans-Georg Gelhaar, Erich Istel, Franz Zimmermann | 1991-10-22 |
| 5055617 | Process for the preparation of N-alkylated anilines | Peter Wimmer, Lothar Puppe, Christian Froehlich | 1991-10-08 |
| 5053565 | Process for the preparation of p-chlorotoluene | Artur Botta, Lothar Puppe | 1991-10-01 |
| 5053566 | Process for the preparation of oligophenyls dihalogenated in the 4,4'-position | Artur Botta, Lothar Puppe | 1991-10-01 |
| 5030770 | Process for the preparation of thymol | Peter Wimmer, Lothar Puppe | 1991-07-09 |
| 5023346 | Process for the production of cyclic carbonic acid esters | Norbert Schon | 1991-06-11 |
| 5001177 | Branched thermoplastic polycarbonates having improved protection against UV light | Paul Winfried, Wolfgang Nising, Thomas Scholl | 1991-03-19 |
| 4966958 | Process for the preparation of aromatic polyesters | Peter Tacke, Ludwig Bottenbruch, Ulrich Grigo, Wolfgang Alewelt | 1990-10-30 |
| 4960943 | Process for the preparation of phenylketones etherified in the 4-position | Artur Botta, Lothar Puppe, Dieter Arlt | 1990-10-02 |
| 4956485 | Trialkylsilyloxy-1,1-diphenyl ethylenes and polymers produced therewith | Edgar Leitz, Ludwig Bottenbruch, Karl-Heinz Ott | 1990-09-11 |
| 4950817 | Process for the preparation of 4,4'-dihalobiphenyls | Artur Botta, Lothar Puppe | 1990-08-21 |
| 4940817 | Process for the preparation of n-alkylanilines | Gunter Klug, Lothar Puppe | 1990-07-10 |
| 4920166 | Flame-resistant, antistatic polycarbonate molding compositions | Norbert Schon, Hans-Jurgen Kress, Herbert Eichenauer, Josef Buekers | 1990-04-24 |
| 4918232 | Process for separating aniline derivatives | Michael Hullmann, Lothar Puppe | 1990-04-17 |
| 4897436 | New Stabilizers and their use for the production of stabilized polyamides and rubber materials | Zsolt Szentivanyi, Bert Brassat, Christiane Oppenheimer-Stix | 1990-01-30 |
| 4883835 | Flame resistant antistatic polycarbonate moulding compounds | Norbert Schon, Hans-Jurgen Kress, Herbert Eichenauer, Josef Buekers | 1989-11-28 |
| 4879367 | Process for the preparation of aliphatic polycarbonates with alkoxy silane initiator | Karl-Erwin Piejko, Bruno Bomer, Michael Hullmann | 1989-11-07 |
| 4877825 | Elasthane fibers stabilized against environmental influences | Michael Kausch, Hans Schroer, Carlhans Suling | 1989-10-31 |
| 4861878 | 1H-pyrido-(2,3-b) (1,4)-thiazines | Gerd Fengler, Alexander Klausener, Mithat Mardin, Bernhard Pelster | 1989-08-29 |
| 4851550 | Process for the preparation of cyclic aliphatic orthocarbonic esters new cyclic orthocarbonic esters | Peter Mues | 1989-07-25 |
| 4839421 | Antistatic, thermoplastic moulding compound based on polycarbonates and aromatic vinyl polymers | Norbert Schon, Herbert Eichenauer, Hans-Jurgen Kress, Josef Buekers | 1989-06-13 |
| 4816576 | Sulphonic acid amidamines | Wolfgang Wellner, Hermann Gruber | 1989-03-28 |
| 4812591 | Process for the preparation of bisphenol-bisacrylates | Werner Kloker | 1989-03-14 |
| 4784997 | 1-H-pyrido-[3,2-b][1,4]-thiazine | Alexander Klausener, Gerd Fengler, Bernhard Pelster | 1988-11-15 |
| 4764310 | Process for the preparation of aromatic carboxylic acid chlorides | — | 1988-08-16 |