Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5072017 | Process for the preparation of P-substituted O-benzylphenols | Hans-Josef Buysch, Gunter Klug, Peter Mues | 1991-12-10 |
| 5068434 | Process for the preparation of N-alkylated anilines | Gunter Klug, Hans-Josef Buysch | 1991-11-26 |
| 5055617 | Process for the preparation of N-alkylated anilines | Peter Wimmer, Hans-Josef Buysch, Christian Froehlich | 1991-10-08 |
| 5053565 | Process for the preparation of p-chlorotoluene | Artur Botta, Hans-Josef Buysch | 1991-10-01 |
| 5053566 | Process for the preparation of oligophenyls dihalogenated in the 4,4'-position | Artur Botta, Hans-Josef Buysch | 1991-10-01 |
| 5030770 | Process for the preparation of thymol | Peter Wimmer, Hans-Josef Buysch | 1991-07-09 |
| 4990687 | Preparation of 4-methyl-2-cyclohexylphenol | Alfons Klein, Helmut Fiege, Werner Jeblick | 1991-02-05 |
| 4960943 | Process for the preparation of phenylketones etherified in the 4-position | Artur Botta, Hans-Josef Buysch, Dieter Arlt | 1990-10-02 |
| 4950312 | Silica-bound calcium-containing zeolite a granulate | Gerhard Reiss | 1990-08-21 |
| 4950817 | Process for the preparation of 4,4'-dihalobiphenyls | Artur Botta, Hans-Josef Buysch | 1990-08-21 |
| 4946659 | Process for the reduction of the nitrogen oxides in exhaust gases using a zeolite-containing catalyst | Wolfgang Held, Axel Konig | 1990-08-07 |
| 4940817 | Process for the preparation of n-alkylanilines | Gunter Klug, Hans-Josef Buysch | 1990-07-10 |
| 4918232 | Process for separating aniline derivatives | Hans-Josef Buysch, Michael Hullmann | 1990-04-17 |
| 4913850 | Process for the removal of iodine and organic iodine compounds from gases and vapors using silver-containing zeolite of the faujasite type | Jurgen Wilhelm | 1990-04-03 |
| 4628097 | Process for the preparation of 2-amino-alkylpyridines | Helmut Le Blanc, Karlfried Wedemeyer | 1986-12-09 |
| 4439409 | Crystalline aluminosilicate PSH-3 and its process of preparation | Jurgen Weisser | 1984-03-27 |
| 4359565 | Vinylsilicone pastes for dental impression | Reiner Voigt, Manfred Borgardt, Hans-Heinrich Moretto, Bernard Munchenbach | 1982-11-16 |
| 4271130 | Process for the preparation of zeolite A from kaolin | Robert Endres, Heinz Drave, Manfred Mansmann | 1981-06-02 |
| 4254062 | Separation process | Raimund Wambach, Sigurd Hartung, Gerhard Reiss | 1981-03-03 |
| 4220567 | Stabilizing pigmented lacquers with zeolites | Friedrich Kindervater, Gunter Ulisch, Theodor Bohmann, Manfred Mengel | 1980-09-02 |