Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5030771 | Method of producing aliphatic and cycloaliphatic diols by catalytic hydrogenation of dicarboxylic acid esters | Werner Fuhrmann, Gunther Bub | 1991-07-09 |
| 4855458 | Manufacture of phthalic anhydride by gas phase oxidation of a mixture of o-xylol and naphthalene | Werner Fuhrmann, Wilfried Krix | 1989-08-08 |
| 4780547 | Process for the production of C.sub.1 -- to C.sub.6 -N-alkylpyrrolidones from succinic anhydride and/or C.sub.1 -- to C.sub.6 -N-alkylsuccinimides | Werner Otte | 1988-10-25 |
| 4551564 | Process for the production of 2- and 4-tert-butylcyclohexanols with high proportions of cis-isomers by catalytic-hydrogenation of the corresponding tert-butylphenols | Werner Otte, Rudolf Nehring | 1985-11-05 |
| 4526971 | Process for the production of polyalkylpiperidylamines | Josef Disteldorf, Werner Hubel, Gunter Kriebel | 1985-07-02 |
| 4250337 | Two stage hydrogenation to make neopentyl glycol | Manfred Kaufhold, Erhard Lange | 1981-02-10 |
| 4190731 | Process for working up distillation residues from the hydroformylation of propene | Rudolph Nehring, Werner Neumann | 1980-02-26 |