Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5391782 | Process for the production of highly concentrated pastes of .alpha.-sulfofatty acid alkyl ester alkali metal salts | Erich Dorra, Guenter Panthel, Wolfgang Schmidt, Norbert Wrede | 1995-02-21 |
| 5391783 | Process for the production of light-colored pastes of .alpha.-sulfofatty acid alkyl ester alkali metal salts | Erich Dorra, Herbert Lepper, Guenter Panthel, Francois Pierron, Wolfgang Schmidt +1 more | 1995-02-21 |
| 5384422 | Process for the production of light-colored .alpha.-sulfofatty acid alkyl ester alkali metal salt pastes | Erich Dorra, Guenter Panthel, Wolfgang Schmidt, Norbert Wrede | 1995-01-24 |
| 5382677 | Process for the production of highly concentrated pastes of .alpha.-sulfofatty acid alkyl ester alkali metal salts | Erich Dorra, Guenter Panthel, Wolfgang Schmidt, Norbert Wrede | 1995-01-17 |
| 4990288 | Control of disalt in .alpha.-sulfofatty acid ester surfactants | Robert Piorr, Guenter Panthel, Karl Schmid, Hans J. Rommerskirchen, Wolfgang Schmidt +1 more | 1991-02-05 |
| 4695409 | Control of disalt in .alpha.-sulfofatty acid ester surfactants | Robert Piorr, Guenter Panthel, Karl Schmid, Hans J. Rommerskirchen, Wolfgang Schmidt +1 more | 1987-09-22 |