Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9920151 | Highly swellable polymers | Christoph Hartmann | 2018-03-20 |
| 6019925 | Method of making cellulosic dialysis membrane | Martin Nywlt, Winfried Holz | 2000-02-01 |
| 5427684 | Dialysis membrane composed of polysaccharide ether II | Gustav Dunweg, Thomas Rintelen | 1995-06-27 |
| 5360636 | Method for coating cellulosic membranes | Edmund Richter, Thomas Rintelen, Gustav Duweg, Angelika Reiche, Ralf Tatas | 1994-11-01 |
| 5171444 | Dialysis membrane made of polysaccharide ether | Horst-Dieter Lemke | 1992-12-15 |
| 5132415 | Method of manufacturing deoxycellulose compounds | Ernst F. Kundinger | 1992-07-21 |
| 5093488 | Modified chitin for biocompatible dialysis membranes III and process for preparation of modified cellulose and modified chitin for use therewith | — | 1992-03-03 |
| 5093486 | Modified chitin for biocompatible dialysis membranes II and process for preparation of modified cellulose and modified chitin for use therewith | — | 1992-03-03 |
| 5093489 | Modified chitin for biocompatible dialysis membranes IV and process for preparation of modified cellulose and modified chitin for use therewith | — | 1992-03-03 |
| 5087366 | Biocompatible dialysis membrane comprising a mixed polysaccharide ester | Hans G. Tilgner | 1992-02-11 |
| 5068269 | Cellulosic membranes | — | 1991-11-26 |
| 5055570 | Cuprammonium-stable cellulose esters and carbamates for dialysis membranes | — | 1991-10-08 |
| 5026834 | Modified cellulose for biocompatible dialysis membranes | Helmut Kuhne | 1991-06-25 |
| 5008385 | Cellulose derivatives and fibers and membranes made therefrom | — | 1991-04-16 |
| 4997935 | Modified cellulose for biocompatible dialysis membranes III and process for preparation thereof | — | 1991-03-05 |
| 4981960 | Modified cellulose for biocompatible dialysis membranes IV and process for preparation thereof | — | 1991-01-01 |
| 4981959 | Modified cellulose for biocompatible dialysis membranes II and process for preparation thereof | — | 1991-01-01 |
| 4962140 | Process for producing cellulosic dialysis membranes having improved biocompatibility and device for carrying out the process | — | 1990-10-09 |
| 4795762 | Water-swellable composition, synthesis and use thereof | Christoph Josefiak, Helmut Magerlein | 1989-01-03 |
| 4734239 | Process for the production of water-insoluble fibers of cellulose monoesters of maleic acid, succinic acid and phthalic acid, having an extremely high absorbability for water and physiological liquids | Gerhard Meyer | 1988-03-29 |
| 4708985 | Hydrophilic polyester compounds | Helmut Magerlein, Walter Brodowski, Wolfgang Grimm, Gerhard Meyer | 1987-11-24 |
| 4668396 | Dialysis membrane of modified cellulose with improved biocompatibility | Ulrich Baurmeister, Walter Brodowski, Gustav Dunweg, Werner Henne, Michael Pelger +1 more | 1987-05-26 |
| 4543409 | Water-insoluble fibers of cellulose acetate, cellulose propionate and cellulose butyrate with an extremely high absorptive capacity for water and physiological liquids | Alexander Brandner, Gerhard Meyer | 1985-09-24 |