Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5290880 | Preparation of finely divided, water-soluble polymers containing vinylamine units | Dietmar Moench, Michael Kroener, Heinrich Hartmann, Norbert Sendhoff | 1994-03-01 |
| 5262008 | Production of paper, board and cardboard in the presence of copolymers containing N-vinylformamide units | Dietmar Moench, Heinrich Hartmann, Andreas Stange | 1993-11-16 |
| 5166427 | Preparation of acyl chlorides | Andreas Hohmann, Wolfgang Reuther, Kurt Mayer | 1992-11-24 |
| 5126395 | Preparation of stable water-in-oil emulsions of hydrolyzed polymers of N-vinylamides | Lutz End, Walter Denzinger, Michael Kroener, Norbert Sendhoff, Friedrich Linhart +2 more | 1992-06-30 |
| 5098521 | Production of paper, board and cardboard from paper stocks containing foreign materials | Friedrich Linhart, Rainer Tresch, Heinrich Hartmann, Walter Denzinger, Michael Kroener +1 more | 1992-03-24 |
| 5008321 | Preparation of stable water-in-oil emulsions of hydrolyzed polymers of N-vinylamides and their use | Heinrich Hartmann, Walter Denzinger, Michael Kroener, Norbert Sendhoff | 1991-04-16 |
| 4900479 | Preparation of carbonyl halides of more than 7 carbon atoms | Peter Wittmer, Andreas Hohmann, Hans-Heinrich Bechtolsheimer | 1990-02-13 |
| 4770743 | Engine size for paper, based on fatty alkyl diketenes and cationic polyacrylamides | Volkmar Weberndoerfer, Hans-Juergen Degen, Ulrich Riebeling | 1988-09-13 |