Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5639706 | Hydrogenation catalyst based on a platinum metal partially poisoned with finely divided sulfur | Hugo Fuchs, Gerald Neubauer, Heinz-Walter Schneider | 1997-06-17 |
| 5560895 | Method of use of a hydrogenation catalyst based on a platinum metal partially poisoned with finely divided sulfur | Hugo Fuchs, Gerald Neubauer, Heinz-Walter Schneider | 1996-10-01 |
| 5496789 | Hydrogenation catalyst based on a platinum metal partially poisoned with finely divided sulfur | Hugo Fuchs, Gerald Neubauer, Heinz-Walter Schneider | 1996-03-05 |
| 5236685 | Preparation of hydroxylammonium salts | Hugo Fuchs, Josef Ritz | 1993-08-17 |
| 5155081 | Platinum-on-graphite catalysts | Werner Steigleiter, Wolfgang Hoelderich, Hugo Fuchs, Luc Guns, Gerald Neubauer +1 more | 1992-10-13 |
| 5143872 | Method of regenerating inactive and poisoned platinum catalysts | Hugo Fuchs | 1992-09-01 |
| 5120699 | Platinum-on-graphite catalysts and the use thereof | Hugo Fuchs, Werner Steigleiter, Wolfgang Hoelderich, Luc Guns, Gerald Neubauer +1 more | 1992-06-09 |
| 4997635 | Preparation of crystalline hydroxylammonium sulfate having a low ammonium sulfate content | Hugo Fuchs, Gerald Neubauer, Josef Ritz | 1991-03-05 |
| 4895711 | Preparation of hydroxylammonium salts | Werner Biffar, Werner Steigleiter | 1990-01-23 |
| 4889704 | Preparation of hydroxylammonium salts | Hugo Fuchs, Josef Ritz, Erwin Thomas | 1989-12-26 |
| 4837362 | Preparation of pure hydroxylammonium salts of fatty acids of 1 to 4 carbon atoms | Hugo Fuchs | 1989-06-06 |
| 4778669 | Preparation of aqueous solutions of free hydroxylamine | Hugo Fuchs, Erwin Thomas, Josef Ritz | 1988-10-18 |
| 4737354 | Preparation of hydroxylamine-O-sulfonic acid | Hugo Fuchs, Erwin Thomas, Josef Ritz | 1988-04-12 |
| 4725360 | Working up wastewaters containing hydroxylamine or its salts | Hugo Fuchs, Erwin Thomas, Josef Ritz | 1988-02-16 |
| 4659683 | Regeneration of inactive and poisoned platinum catalysts | Werner Biffar, Otto Hofstadt, Klaus Kartte, Erwin Thomas | 1987-04-21 |
| 4645579 | Preparation of aqueous hydroxylamine solutions | Wolfgang Habermann, Peter Hammes, Elmar Frommer, Erwin Thomas, Peter Thoma | 1987-02-24 |
| 4634584 | Stabilized solutions of hydroxylamine or its salts in water or alcohols, and their preparation | Otto-Alfred Grosskinsky, Elmar Frommer, Josef Ritz, Erwin Thomas | 1987-01-06 |
| 4629613 | Stabilized solutions of hydroxylamine or its salts in water or alcohols, and their preparation | Otto-Alfred Grosskinsky, Elmar Frommer, Josef Ritz, Erwin Thomas | 1986-12-16 |
| 4601800 | Preparation of aqueous solutions of hydroxylammonium carbonate | Wolfgang Habermann, Peter Hammes, Josef Ritz, Erwin Thomas, Peter Thoma | 1986-07-22 |
| 4576804 | Stabilized solutions of hydroxylamine or its salts | Otto-Alfred Grosskinsky, Elmar Frommer, Josef Ritz, Erwin Thomas | 1986-03-18 |
| 4551318 | Stabilized solutions of hydroxylamine or its salts in water or alcohols, and their preparation | Otto-Alfred Grosskinsky, Elmar Frommer, Josef Ritz, Erwin Thomas | 1985-11-05 |
| 4523027 | Purification of carboxylates containing aldehydes, acetals and/or unsaturated compounds | Rudolf Kummer, Heinz-Walter Schneider, Volker Taglieber | 1985-06-11 |
| 4507271 | Removal of nitrous oxide from gases containing hydrogen, nitric oxide and nitrous oxide | Frans van Deyck, Roger Verberckt, Erwin Thomas, Benedikt Mangelschots, Paul Pijl | 1985-03-26 |
| 4316047 | Preparation of C.sub.1 -C.sub.4 -alkyl pent-3-enoates | Rudolf Kummer, Heinz-Walter Schneider, Volker Taglieber | 1982-02-16 |
| 4310686 | Preparation of butanedicarboxylic esters | Rudolf Kummer, Heinz-Walter Schneider, Volker Taglieber | 1982-01-12 |