Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7754822 | Method for the secondary crosslinking of hydrogels with bicyclic amide acetals | Thomas Daniel, Ulrich Riegel, Mark Elliott, Ubbo von Oehsen, Klemens Massonne | 2010-07-13 |
| 7655733 | Postcrosslinking of water absorbing polymers with cyclic carbamates and/or cyclic ureas | Thomas Daniel, Mark Elliott, Ulrich Riegel | 2010-02-02 |
| 7626058 | Processes for producing ethylene amines | Gunther van Cauwenberge, Johann-Peter Melder, Kirsten Dahmen, Klemens Massonne, Steffen Oehlenschlaeger | 2009-12-01 |
| 7547807 | Method for producing phosphonium salts | Laszlo Szarvas, Klemens Massonne, Harald Laas, Detlev Glas | 2009-06-16 |
| 7253316 | Flexible method for the joint production of (i) formic acid, (ii) a carboxylic acid comprising at least two carbon atoms and/or the derivatives thereof, and (iii) a carboxylic acid anhydride | Jörg Pastre, Wolfram Stuer, Elke Geissler, Otto Machhammer | 2007-08-07 |
| 7183360 | Method for crosslinking hydrogels with morpholine-2,3-diones | Thomas Daniel, Klemens Massonne, Ulrich Riegel, Matthias Weismantel | 2007-02-27 |
| 6989454 | Method for producing maleic anhydride | Hartmut Hibst, Ralf Noe, Mark Duda | 2006-01-24 |