Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700358 | Recovery of caprolactam from oligomers and/or polymers of caprolactam | Hugo Fuchs, Gerald Neubauer | 1997-12-23 |
| 5693793 | Preparation of caprolactam from 6-aminocapronitrile | Eberhard Fuchs, Guido Voit, Gunther Achhammer, Rolf Fischer | 1997-12-02 |
| 5536831 | Obtaining caprolactam by cleavage of molten polycaprolactam | Michael Kopietz, Alan Handerman, Simon Jones, Ulrich Kalck, Claus-Ulrich Priester +3 more | 1996-07-16 |
| 5496941 | Process for continuous purification of crude caprolactam prepared from 6-aminocapronitrile | Rolf Fischer, Werner Schnurr, Gu/ nther Achhammer, Hermann Luyken, Eberhard Fuchs | 1996-03-05 |
| 5458740 | Process for the purification of crude caprolactam | Thomas P. Losier, Donald R. Johnson, Hugo Fuchs, Gerald Neubauer | 1995-10-17 |
| 5441607 | Recovery of caprolactam from distillation residues obtained in the purification of caprolactam | Hugo Fuchs, Hans J. Wilfinger, David Weatherford | 1995-08-15 |
| 5360905 | Recovery of caprolactam from oligomers and/or polymers of caprolactam | Hugo Fuchs, Claus-Ulrich Priester, Gerald Neubauer, Erwin Brunner, Michael Kopietz | 1994-11-01 |
| 5359062 | Recovery of caprolactam from polycaprolactam | Hugo Fuchs, Gerald Neubauer, Claus-Ulrich Priester | 1994-10-25 |
| 5264571 | Preparation of caprolactam by Beckmann rearrangement of cyclohexanone oxime | Hugo Fuchs, Gerald Neubauer | 1993-11-23 |
| 5236685 | Preparation of hydroxylammonium salts | Hugo Fuchs, Franz-Josef Weiss | 1993-08-17 |
| 5155081 | Platinum-on-graphite catalysts | Werner Steigleiter, Wolfgang Hoelderich, Franz-Josef Weiss, Hugo Fuchs, Luc Guns +1 more | 1992-10-13 |
| 5124138 | Work-up of aqueous mother liquors containing hydrochloric acid, sulfuric acid and their hydroxyl-ammonium and ammonium salts | Hugo Fuchs, Gerald Neubauer | 1992-06-23 |
| 5120699 | Platinum-on-graphite catalysts and the use thereof | Franz-Josef Weiss, Hugo Fuchs, Werner Steigleiter, Wolfgang Hoelderich, Luc Guns +1 more | 1992-06-09 |
| 5032684 | Continuous purification of caprolactam | Gerald Neubauer, Hugo Fuchs, David Agar, Rolf Fischer, Uwe Vagt | 1991-07-16 |
| 4997635 | Preparation of crystalline hydroxylammonium sulfate having a low ammonium sulfate content | Hugo Fuchs, Gerald Neubauer, Franz-Josef Weiss | 1991-03-05 |
| 4931592 | Storability of molten cyclohexanone oxime | Hugo Fuchs, David Agab, Gerald Neubauer | 1990-06-05 |
| 4889704 | Preparation of hydroxylammonium salts | Hugo Fuchs, Erwin Thomas, Franz-Josef Weiss | 1989-12-26 |
| 4882430 | Recovery of caprolactam from caprolactam distillation low boilers or high boilers or mixtures thereof | Gerald Neubauer, Emile De Decker, Hugo Fuchs, Bernhard Holzknecht | 1989-11-21 |
| 4814511 | Working up cyclohexyl hydroperoxide containing reaction mixtures | Gerald Neubauer, Rolf Schnabel, Juergen Hartig | 1989-03-21 |
| 4778669 | Preparation of aqueous solutions of free hydroxylamine | Hugo Fuchs, Franz-Josef Weiss, Erwin Thomas | 1988-10-18 |
| 4737354 | Preparation of hydroxylamine-O-sulfonic acid | Hugo Fuchs, Franz-Josef Weiss, Erwin Thomas | 1988-04-12 |
| 4725360 | Working up wastewaters containing hydroxylamine or its salts | Hugo Fuchs, Erwin Thomas, Franz-Josef Weiss | 1988-02-16 |
| 4634584 | Stabilized solutions of hydroxylamine or its salts in water or alcohols, and their preparation | Otto-Alfred Grosskinsky, Elmar Frommer, Erwin Thomas, Franz-Josef Weiss | 1987-01-06 |
| 4629613 | Stabilized solutions of hydroxylamine or its salts in water or alcohols, and their preparation | Otto-Alfred Grosskinsky, Elmar Frommer, Erwin Thomas, Franz-Josef Weiss | 1986-12-16 |
| 4601800 | Preparation of aqueous solutions of hydroxylammonium carbonate | Franz-Josef Weiss, Wolfgang Habermann, Peter Hammes, Erwin Thomas, Peter Thoma | 1986-07-22 |