Issued Patents All Time
Showing 101–125 of 148 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4497963 | Process for the preparation of an aliphatic, cycloaliphatic, and/or aliphatic-cycloaliphatic di- and/or polyurethane | Friedrich Towae | 1985-02-05 |
| 4496770 | Process for the preparation of .alpha.-alkylacroleins | Gerd Duembgen, Gerd Fouquet, Richard Krabetz, Ekhart Lucas, Friedbert Nees | 1985-01-29 |
| 4493801 | Preparation of tertiary alcohols | Gerhard Nestler | 1985-01-15 |
| 4487962 | Preparation of methacrylic acid by gas phase oxidation of methacrolein | Richard Krabetz, Matthias Schwarzmann | 1984-12-11 |
| 4482499 | Process for the preparation of isocyanates by thermal cleaving of urethanes | Gerhard Nestler, Rolf Platz, Friedrich Towae, Hans Hellbach | 1984-11-13 |
| 4476316 | Preparation of N-substituted carbamates | Gerhard Nestler | 1984-10-09 |
| 4473376 | Dye mixtures of azo compounds soluble in organic solvents | Guenter Hansen, Gerhard Nestler, Georg Zeidler | 1984-09-25 |
| 4459236 | Preparation of 1-alkenyl isocyanates | Hans-Martin Hutmacher, Friedrich Towae | 1984-07-10 |
| 4436668 | Preparation of carbonates | Wolfgang Harder, Friedrich Towae | 1984-03-13 |
| 4423247 | Manufacture of aralkylarylamines and alkylarylamines | Ludwig Schroff, deceased | 1983-12-27 |
| 4409128 | Oxidation catalyst, especially for the preparation of methacrylic acid by gas phase oxidation of methacrolein | Richard Krabetz, Matthias Schwarzmann | 1983-10-11 |
| 4408079 | Preparation of alpha-alkylacroleins | Hans-Juergen Foerster | 1983-10-04 |
| 4393207 | Alkoxyalkylaminotriazine trans-etherification products | Rainer Hummerich, Wolfram Weiss, Guenther Immel, Hans-Joachim Kraus, Karl-Clemens Peters | 1983-07-12 |
| 4393251 | Preparation of propanediols using a copper-and zinc containing hydrogenation catalyst | Franz J. Broecker, Leopold Hupfer, Ernest Miesen, Juergen Paetsch, Guenter Zirker | 1983-07-12 |
| 4386018 | Hydrogenation catalysts for the preparation of propanediols | Ernest Miesen, Franz J. Broecker, Wolfgang Schroeder, Karl Baer, Juergen Paetsch +1 more | 1983-05-31 |
| 4386219 | Hydrogenation catalysts for the preparation of propanediols and processes for the preparation of propanediols, using such catalysts | Ernest Miesen, Franz J. Broecker, Wolfgang Schroeder, Karl Baer, Juergen Paetsch +1 more | 1983-05-31 |
| 4384120 | Preparation of pyridines | Gerd Fouquet | 1983-05-17 |
| 4375000 | Process for the preparation of an aryl mono-, di-, and/or polyurethane | Friedrich Towae, Wolfgang Harder | 1983-02-22 |
| 4359584 | Preparation of p-substituted, aromatic amines | Gerhard Nestler | 1982-11-16 |
| 4354045 | Preparation of formaldehyde | Gerd Fouquet | 1982-10-12 |
| 4349484 | Process for the manufacture of mixtures of diphenylmethane diisocyanates and polyphenyl polymethylene polyisocyanates | Gerhard Nestler, Friedrich Towae, Wolfgang Harder | 1982-09-14 |
| 4336403 | Preparation of methyl methacrylate by reaction of methyl propionate and methanol | Gerd Fouquet | 1982-06-22 |
| 4330479 | Thermal decomposition of aryl urethanes | Friedrich Towae | 1982-05-18 |
| 4328354 | Preparation of methylene-bis-phenylcarbamic acid esters and polymethylene-polyphenylcarbamic acid esters | Gerhard Nestler | 1982-05-04 |
| 4324727 | Preparation of butyrolactones | Gerhard Nestler | 1982-04-13 |