Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4735741 | Preparation of solutions of molecular oxygen in liquid hydrocarbons | Guenter Herrmann, Ulrich Loeffler, Rolf Schnabel, Dieter Stuetzer | 1988-04-05 |
| 4634584 | Stabilized solutions of hydroxylamine or its salts in water or alcohols, and their preparation | Elmar Frommer, Josef Ritz, Erwin Thomas, Franz-Josef Weiss | 1987-01-06 |
| 4629613 | Stabilized solutions of hydroxylamine or its salts in water or alcohols, and their preparation | Elmar Frommer, Josef Ritz, Erwin Thomas, Franz-Josef Weiss | 1986-12-16 |
| 4587363 | Continuous preparation of oxygen-containing compounds | Jurgen Hartig, Gunter Schuch, Armin Stoessel, Guenter Herrmann, Arthur Brunner +1 more | 1986-05-06 |
| 4576804 | Stabilized solutions of hydroxylamine or its salts | Elmar Frommer, Josef Ritz, Erwin Thomas, Franz-Josef Weiss | 1986-03-18 |
| 4551318 | Stabilized solutions of hydroxylamine or its salts in water or alcohols, and their preparation | Elmar Frommer, Josef Ritz, Erwin Thomas, Franz-Josef Weiss | 1985-11-05 |
| 4477424 | Continuous preparation of hydroxylammonium salts | Elmar Frommer, Gunther Rapp, deceased, Erwin Thomas | 1984-10-16 |
| 4457906 | Preparation of hydroxylammonium salts | Elmar Frommer, Guenther Rapp, Erwin Thomas | 1984-07-03 |
| 4404176 | Preparation of hydroxylammonium salts | Elmar Frommer, Gunther Rapp, deceased, Erwin Thomas | 1983-09-13 |
| 4360461 | Process for obtaining caprolactam by cleaving caprolactam oligomers | Hugo Fuchs, Elmar Frommer | 1982-11-23 |
| 4301073 | Purification of caprolactam | Hugo Fuchs, Elmar Frommer, Klaus Kartte | 1981-11-17 |
| 4257950 | Continuous preparation of .epsilon.-caprolactam by Beckmann rearrangement | Peter Horn, Richard Thoma, Hugo Fuchs | 1981-03-24 |
| 4227021 | Production of adipic acid from acidic wash waters | Norbert Petri, Johannes Hein, Hans Leitner | 1980-10-07 |