Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5149861 | Recovery of trialkylamines and methyl formate from mixtures obtained in the preparation of trimethylolalkanes | Franz Merger, Peter Hettinger, Leopold Hupfer, Heribert Deck, Heinz Auer +1 more | 1992-09-22 |
| 4769200 | Compounding crystalline organic materials | Leopold Hupfer, Johann Hotz, Heino Thiele, Hans D. Zettler | 1988-09-06 |
| 4594461 | Preparation of trimethylolalkanes from alkanals and formaldehyde | Franz Merger, Peter Hettinger, Leopold Hupfer | 1986-06-10 |
| 4482764 | Preparation of diols | Guenter Herrmann, Elmar Frommer, Wolfgang Reiss, Siegfried Winderl | 1984-11-13 |
| 4393251 | Preparation of propanediols using a copper-and zinc containing hydrogenation catalyst | Franz J. Broecker, Leopold Hupfer, Franz Merger, Ernest Miesen, Guenter Zirker | 1983-07-12 |
| 4386219 | Hydrogenation catalysts for the preparation of propanediols and processes for the preparation of propanediols, using such catalysts | Franz Merger, Ernest Miesen, Franz J. Broecker, Wolfgang Schroeder, Karl Baer +1 more | 1983-05-31 |
| 4386018 | Hydrogenation catalysts for the preparation of propanediols | Franz Merger, Ernest Miesen, Franz J. Broecker, Wolfgang Schroeder, Karl Baer +1 more | 1983-05-31 |
| 4347388 | 3,6-Dimethyl-3-hydroxy-oct-1-ynes and -oct-1-enes, derivatives of these, and their use as scents, and in the preparation of 3,6-dimethyl-3-hydroxy-octane | Walter Gramlich, Werner Hoffmann, Leopold Hupfer, Bernd Meissner | 1982-08-31 |
| 4239552 | Machine dishwashing, using polyhydric alcohols, carboxylic acids and or esters of these as rinsing agents | Johannes Perner, Dieter Stoeckigt, Paul Diessel, Franz Merger | 1980-12-16 |
| 4239641 | Use of polyhydric alcohols, carboxylic acids, hydroxy-carboxylic acids and/or their esters with polyhydric alcohols as viscosity regulators | Johannes Perner, Paul Diessel, Dieter Stoeckigt, Franz Merger | 1980-12-16 |