Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889704 | Preparation of hydroxylammonium salts | Hugo Fuchs, Josef Ritz, Franz-Josef Weiss | 1989-12-26 |
| 4778669 | Preparation of aqueous solutions of free hydroxylamine | Hugo Fuchs, Franz-Josef Weiss, Josef Ritz | 1988-10-18 |
| 4737354 | Preparation of hydroxylamine-O-sulfonic acid | Hugo Fuchs, Franz-Josef Weiss, Josef Ritz | 1988-04-12 |
| 4725360 | Working up wastewaters containing hydroxylamine or its salts | Hugo Fuchs, Franz-Josef Weiss, Josef Ritz | 1988-02-16 |
| 4659683 | Regeneration of inactive and poisoned platinum catalysts | Werner Biffar, Otto Hofstadt, Klaus Kartte, Franz-Josef Weiss | 1987-04-21 |
| 4645579 | Preparation of aqueous hydroxylamine solutions | Franz-Josef Weiss, Wolfgang Habermann, Peter Hammes, Elmar Frommer, 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, 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, Josef Ritz, Franz-Josef Weiss | 1986-12-16 |
| 4601800 | Preparation of aqueous solutions of hydroxylammonium carbonate | Franz-Josef Weiss, Wolfgang Habermann, Peter Hammes, Josef Ritz, Peter Thoma | 1986-07-22 |
| 4576804 | Stabilized solutions of hydroxylamine or its salts | Otto-Alfred Grosskinsky, Elmar Frommer, Josef Ritz, Franz-Josef Weiss | 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, Franz-Josef Weiss | 1985-11-05 |
| 4507271 | Removal of nitrous oxide from gases containing hydrogen, nitric oxide and nitrous oxide | Frans van Deyck, Franz-Josef Weiss, Roger Verberckt, Benedikt Mangelschots, Paul Pijl | 1985-03-26 |
| 4491567 | Manufacture of hydroxylammonium salts | Gunther Rapp, deceased, Rolf Muenster, Brodus E. Caffall, Philip A. Cyr, Thomas M. Jones | 1985-01-01 |
| 4477424 | Continuous preparation of hydroxylammonium salts | Otto-Alfred Grosskinsky, Elmar Frommer, Gunther Rapp, deceased | 1984-10-16 |
| 4457906 | Preparation of hydroxylammonium salts | Otto-Alfred Grosskinsky, Elmar Frommer, Guenther Rapp | 1984-07-03 |
| 4438084 | Manufacture of hydroxylammonium salts | Guenther Rapp, Rolf Muenster | 1984-03-20 |
| 4404176 | Preparation of hydroxylammonium salts | Otto-Alfred Grosskinsky, Elmar Frommer, Gunther Rapp, deceased | 1983-09-13 |
| 4387082 | Removal of nitrous oxide from exit gases containing this compound during the production of hydroxylammonium salts | Alfred-Otto Grosskinsky, Elmar Frommer, Guenther Rapp, Ruediger Schmitz | 1983-06-07 |
| 4340575 | Manufacture of hydroxylammonium salts | Guenther Rapp, Kurt Jockers | 1982-07-20 |
| 4192856 | Manufacture of hydroxylammonium salts | Guenther Rapp, Dieter Wolf | 1980-03-11 |