Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700351 | Antifoams based on oil-in-water emulsions for the paper industry | Rudolf Schuhmacher, Gabriele Dralle-Voss, Knut Oppenlaender, Brigitte Wegner | 1997-12-23 |
| 5498648 | Paper size mixtures | Arnold De Clercq, Roland Ettl, Carlos Goncalves, Lothar Hoehr, Ulrich Riebeling | 1996-03-12 |
| 5326499 | Antifoams for the paper industry, based on oil-in-water emulsions | Brigitte Wegner, Knut Oppenlaender, Rudolf Schuhmacher, Gabriele Dralle-Vos | 1994-07-05 |
| 5245063 | Preparation of carbonyl chlorides | Peter Ksoll, Wolfgang Reuther, Peter Wittmer | 1993-09-14 |
| 5166427 | Preparation of acyl chlorides | Enrique Freudenberg, Wolfgang Reuther, Kurt Mayer | 1992-11-24 |
| 5158974 | Preparation of N-alkyl- and N,N-dialkyldiaminoethanes | Wolfgang Reuther, Werner Bochnitschek | 1992-10-27 |
| 5154763 | Stabilized aqueous alkyldiketene emulsions | Peter Ksoll, Erwin Hahn, Peter Wittmer, Arnold De Clercq, Ulrich Riebeling | 1992-10-13 |
| 5017725 | Preparation of addition salts of cysteamine with acids | Wolfgang Reuther, Rolf Fikentscher, Theo Proll | 1991-05-21 |
| 4900479 | Preparation of carbonyl halides of more than 7 carbon atoms | Enrique Freudenberg, Peter Wittmer, Hans-Heinrich Bechtolsheimer | 1990-02-13 |