Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4600542 | Sulphonation products of naphthalene, processes for their preparation, and their use | Heinrich Pelster, Guido Steffan, Arnd Stuwe | 1986-07-15 |
| 4534905 | Process for the preparation of nitronaphthalene-sulphonic acids | Horst Behre, Heinz U. Blank, Gerhard Burmeister | 1985-08-13 |
| 4479811 | Method for the drying and removal of hydrocarbons from gases | Burkhard Schlicht, Christel Sonntag, Hans-Peter BEISE, Klaus Wehner, Werner Burk +2 more | 1984-10-30 |
| 4427601 | Process for preparing 1-amino-2-naphthol-4-sulphonic acid (amidol acid) | Erich Hammerschmidt, Horst Behre, Heinz U. Blank | 1984-01-24 |
| 4426334 | Process for isolating H acid and K acid | Horst Behre, Heinz U. Blank, Willi Schossler | 1984-01-17 |