Issued Patents All Time
Showing 126–148 of 148 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4322365 | Preparation of isocyanates | Friedrich Towae | 1982-03-30 |
| 4320232 | Process for conjointly preparing methyl tert.-butyl ether and obtaining isobutene | Klaus Volkamer, Alfred Lindner, Ulrich Wagner, Erwin Brunner, Gerhard Sandrock +1 more | 1982-03-16 |
| 4320235 | Preparation of 1-(aralkyl)-2-naphthols | Gerhard Nestler | 1982-03-16 |
| 4319035 | Process for recycling noble metal catalysts used for the manufacture of aromatic urethanes | Friedrich Towae | 1982-03-09 |
| 4315869 | Preparation of .alpha.,.beta.-unsaturated nitriles | Hans-Martin Hutmacher, Helmut Hagen | 1982-02-16 |
| 4294971 | Preparation of N-aryloxazolidine-2,4-diones | Friedrich Towae | 1981-10-13 |
| 4290970 | Process for the manufacture of aromatic di- and/or polyisocyanates | Friedrich Towae | 1981-09-22 |
| 4287379 | Process for obtaining isobutene from C.sub.4 -hydrocarbon mixtures containing isobutene | Erwin Brunner, Eckart Schubert, Alfred Lindner, Klaus Volkamer, Max Strohmeyer +1 more | 1981-09-01 |
| 4282368 | Preparation of p-substituted aromatic carbamic acid esters | Gerhard Nestler | 1981-08-04 |
| 4282370 | Preparation of methylene-bis-phenylcarbamic acid esters and of polymethylene-polyphenylcarbamic acid esters | Gerhard Nestler | 1981-08-04 |
| 4278805 | Process for the preparation of an aryl mono-, di-, and/or polyurethane | Friedrich Towae | 1981-07-14 |
| 4273938 | Preparation of N-substituted carboxylic acid amides | Gerhard Nestler, Uwe Kempe | 1981-06-16 |
| 4273934 | Preparation of 3-hydroxy-2,2,4-trimethylpentyl isobutyrate | Hans-Juergen Foerster | 1981-06-16 |
| 4243815 | Preparation of methylene-bis(4-phenylcarbamic acid esters) | Gerhard Nestler | 1981-01-06 |
| 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, Juergen Paetsch | 1980-12-16 |
| 4239552 | Machine dishwashing, using polyhydric alcohols, carboxylic acids and or esters of these as rinsing agents | Johannes Perner, Dieter Stoeckigt, Paul Diessel, Juergen Paetsch | 1980-12-16 |
| 4226780 | Manufacture of propylene oxide | Gerd Fouquet, Karl Baer | 1980-10-07 |
| 4213992 | Insecticidal carbamates | Heinrich Adolphi, Annegrit Baumann, Rolf Huber, Karl Kiehs | 1980-07-22 |
| 4210414 | Dye mixtures for coloring mineral oil products | Guenter Hansen, Gerhard Nestler, Georg Zeidler | 1980-07-01 |
| 4202199 | Manufacture of alkylphenol compounds | Gerhard Nestler | 1980-05-13 |
| 4198531 | Manufacture of p-alkylphenols | Max Strohmeyer, Gerhard Sandrock, Heinz Hohenschutz, Ludwig Schroff, deceased, Gerhard Nestler | 1980-04-15 |
| 4192949 | Preparation of aralkyl phenyl ethers and alkyl phenyl ethers | Friedrich Towae, Ludwig Schroff, deceased | 1980-03-11 |
| 4191838 | Acryloxy-alkylpropanals and methacryloxy-alkylpropanals | Friedrich Towae, Erich Penzel | 1980-03-04 |