Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808343 | Process for isolating paraffinsulfonates with a low alkali metal sulfate content and sulfuric acid from paraffin-sulfoxidation reaction mixtures without obligatory production of sodium sulfate | — | 1989-02-28 |
| 4680147 | Process for the isolation under mild conditions of paraffinsulfonate and sulfuric acid from reaction mixtures from paraffin sulfoxidation | — | 1987-07-14 |
| 4557873 | Process for isolating paraffinsulfonates and sulfuric acid of low alkali metal sulfate content from parafinsulfoxidation reaction mixtures | — | 1985-12-10 |
| 4518537 | Process for isolating paraffinsulfonate from the reaction mixture obtained on sulfoxidating paraffins | — | 1985-05-21 |
| 4404082 | Bipolar electrode for anodic processes in undivided cells | Jurgen Cramer, Michael Mitzlaff | 1983-09-13 |
| 4322271 | Process for the preparation of N-vinyl-N-alkyl-carboxylic acid amides | Harald Jensen, Erwin Schmidt, Michael Mitzlaff, Jurgen Cramer, Hartmut Pietsch +1 more | 1982-03-30 |
| 4288300 | Process for the manufacture of N-.alpha.-alkoxyethyl-carboxylic acid amides | Michael Mitzlaff, Jurgen Cramer | 1981-09-08 |
| 4214104 | Use of cyclohexene-(1)-dione-(3,6)-tetraalkyl diketals | — | 1980-07-22 |
| 4204076 | Hydroquinone dimethyl ether | Elmar Konz | 1980-05-20 |