Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6593468 | Essentially fiber-free cellulose ether with improved water retention, method for the production and use thereof | Werner Lange, Bernd Schriewer, Wilhelm Oppermann, Jorn-Bernd Pannek, Rene Kiesewetter | 2003-07-15 |
| 6251419 | Membrane system for controlled tissue regeneration in cases of diseases of the periodontium | Hans Georg Graber | 2001-06-26 |
| 4517324 | Viscous cellulose-containing mixture (paste) and a process for the production of aqueous coating emulsions therefrom | Erhard Luhmann, Lutz Hoppe, Klaus Szablikowski | 1985-05-14 |