Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4774285 | Preparation of water-soluble copolymers containing vinylamine units, and their use as wet strength agents and dry strength agents for paper | Sigberg Pfohl, Heinrich Hartmann, Walter Denzinger | 1988-09-27 |
| 4772359 | Production of paper, board and cardboard | Friedrich Linhart, Hans-Juergen Degen, Werner Auhorn, Heinrich Hartmann, Wilfried Heide | 1988-09-20 |
| 4745207 | Preparation of the reaction products of hydrogen cyanide | Fritz Brunnmueller, Karlheinz Stecher, Rolf Schneider | 1988-05-17 |
| 4711930 | Honeycomb catalyst and its preparation | Wolfgang Hoelderich, Werner Biffar, Matthias Irgang, Wolf D. Mross, Eberhard Ambach | 1987-12-08 |
| 4687848 | Preparation of 2-aminopyrazines and pyrazines | Fritz Brunnmueller | 1987-08-18 |
| 4596889 | Preparation of alkenyl-lactic acid esters and the novel esters obtained | Walter Goetze | 1986-06-24 |
| 4560756 | 2-Aminopyrazines and the preparation of 2-aminopyrazines and pyrazines | Fritz Brunnmueller | 1985-12-24 |
| 4543215 | .alpha.-iminodiacetonitriles and their preparation | Fritz Brunnmueller | 1985-09-24 |
| 4444667 | Flocculant for sludges | Hans Burkert, Friedrich Brunnmueller, Karl-Heinz Beyer, Hans Mueller | 1984-04-24 |
| 4421602 | Linear basic polymers, their preparation and their use | Fritz Brunnmueller, Rolf Schneider, Hans Mueller, Friedrich Linhart | 1983-12-20 |
| 4321412 | Preparation of aromatic aldehydes by the Sommelet reaction | Werner Schoch, Rudi Widder | 1982-03-23 |