Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5723694 | Process for preparing monomethylated or dimethylated phenols | Hans-Josef Buysch | 1998-03-03 |
| 5338861 | Process for the preparation of N-substituted lactams | Hans-Josef Buysch, Otto Immel, Lothar Puppe | 1994-08-16 |
| 5084544 | Cold setting reaction resin mixture and use thereof | Hanns P. Muller, Joachim Franke | 1992-01-28 |
| 5059391 | Use of polyaralkylamines as corrosion inhibitors | Christian Wegner, Heinz-Joachim Rother | 1991-10-22 |
| 5053565 | Process for the preparation of p-chlorotoluene | Hans-Josef Buysch, Lothar Puppe | 1991-10-01 |
| 5053566 | Process for the preparation of oligophenyls dihalogenated in the 4,4'-position | Hans-Josef Buysch, Lothar Puppe | 1991-10-01 |
| 5024987 | Recording material | Gunter Klug, Gert Jabs, Horst Berneth | 1991-06-18 |
| 4960943 | Process for the preparation of phenylketones etherified in the 4-position | Hans-Josef Buysch, Lothar Puppe, Dieter Arlt | 1990-10-02 |
| 4950817 | Process for the preparation of 4,4'-dihalobiphenyls | Hans-Josef Buysch, Lothar Puppe | 1990-08-21 |
| 4902830 | Polyaralkylated hydroxybenzamides, process for their preparation and their use | Thomas Scholl, Christian Wegner, Christian Frolich, Heinz-Joachim Rother | 1990-02-20 |
| 4879368 | Oligobenzylated hydroxycarboxylic acid derivative | Gert Jabs | 1989-11-07 |
| 4468392 | Sulphinyl- and sulphonyl-azacycloheptan-2-ones, and their use as feed additives | Gerd Fengler, Martin Scheer, Friedrich Berschauer | 1984-08-28 |
| 4431795 | Copolymers of cyclic carbonic acid esters and lactams and their production | Heinrich Krimm, Hans-Josef Buysch | 1984-02-14 |
| 4377670 | Copolymers based on aliphatic polycarbonates and lactams | Heinrich Krimm, Hans-Josef Buysch | 1983-03-22 |
| 4328330 | Process for the production of polyureas | Wolfgang Wellner, Hermann Gruber | 1982-05-04 |
| 4325739 | Magnetic metal and alloy pigments | Hans-Peter Biermann, Helmut Steinberger, Rolf Naumann, Lutz Leitner, Heinrich Heine | 1982-04-20 |
| 4278791 | Benzimidazolyl-2-alkane-phosphonic acids | Heinz-Joachim Rother, Gunther Teichmann | 1981-07-14 |
| 4209583 | Corrosion preventative for two-bath stabilizer baths | Werner Berthold, Anita von Konig, Christian Rasp | 1980-06-24 |