Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5196594 | Process for the production of 4,4'-diamino-dicyclohexylmethane with a low trans-trans isomer content by the catalytic hydrogenation of 4,4'-diamino-diphenylmethane | George H. Schmelzer, Gary F. Allen, Guenther Bub | 1993-03-23 |
| 4990682 | Process for the preparation of 5-chloro-2-pentanone | Manfred Kaufhold | 1991-02-05 |
| 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 | Manfred zur Hausen | 1988-10-25 |
| 4720597 | Process for the production of hydroxymethylcyclopropane (cyclopropylmethanol) | Rudolf Nehring | 1988-01-19 |
| 4695660 | Method of producing cyclohexyl compounds | Rudolf Nehring | 1987-09-22 |
| 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 | Rudolf Nehring, Manfred zur Hausen | 1985-11-05 |
| 4542194 | Naphtha-soluble, hydrogenated alkyl aryl ketone/formaldehyde resins and process for their production | Jorg Dorffel, Erhard Lange, Friedrich Heinrich | 1985-09-17 |
| 4359588 | Odoriferous aliphatic ethers of hydroxymethylcyclododecane | Klaus Burzin | 1982-11-16 |