Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8051909 | Method and apparatus for positioning the proximal end of a tubular string above a spider | Jeremy Richard Angelle, Robert L. Tribodeaux, Jr., Donald E. Mosing, Vernon Bouligny, Richard Wiggins | 2011-11-08 |
| 7520988 | Cross-flow filter cassette | Ina Pahl, Ulrich Grummert | 2009-04-21 |
| 6916420 | Wide passage cross-flow filter cassettes | Ulrich Grummert, Ina Pahl, Claudia Hartmann | 2005-07-12 |
| 6352641 | Wound pocket module | — | 2002-03-05 |
| 5739316 | Cross-linked cellulose hydrate membranes | Hans Beer, Wolfgang Demmer, Hans-Heinrich Horl, Dieter Melzner, Dietmar Nussbaumer +1 more | 1998-04-14 |
| 5562827 | Heat-sterilizable spiral-wound membrane filter cartridge | Dieter Melzner | 1996-10-08 |
| 5106506 | Filter stack for insertion in a filter device | Michael Dohrmann | 1992-04-21 |
| 4990256 | Method, device and filter module for the filtration of liquids in cross-flow operation | — | 1991-02-05 |
| 4430218 | Separating device for fluids, consisting of support plates and cut sections of a semi-permeable diaphragm | Horst Perl, Dietmar Nussbaumer, Gunter Pradel, Ulrich Grummert | 1984-02-07 |