Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6037381 | Preparation of polytetrahydrofuran with terminal hydroxyl groups using ion exchangers | Wulfrich Friedemann Beer, Klaus Beiser, Jurgen Ciprian, Lothar Franz, Wolfgang Franzischka +4 more | 2000-03-14 |
| 5939590 | Tetrahydrofuran/but-2-yne-1, 4-diol copolymers containing C-C triple bonds | Christoph Sigwart, Rolf Fischer, Rainer Becker, Klaus-Dieter Plitzko, Gerd Heilen +1 more | 1999-08-17 |
| 5559254 | Separation of a mixture of methanol and tetrahydrofuran into its constituents | Joseph Krug | 1996-09-24 |
| 5463020 | Preparation of polytetrahydrofuran or tetrahydrofuran/alkylene oxide copolymers | Rainer Becker, Michael Huellmann, Wolfgang Franzischka | 1995-10-31 |
| 4912236 | Purification of tetrahydrofuran by distillation | Otto H. Huchler, Ulrich-Dieter Pessel, Erdmann Hollborn, Dieter Schmitt | 1990-03-27 |
| 4588827 | Preparation of tetrahydrofuran | Herbert Mueller | 1986-05-13 |