Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5358988 | Water-in-oil emulsions | Ludwig Schieferstein, Herbert Fischer, Hermann Kroke, Brigitte Spei, Rainer Jeschke +1 more | 1994-10-25 |
| 4961858 | Process for the demulsification of oil/water emulsions using organic demulsifiers and the use of said process | Brigitte Spei | 1990-10-09 |
| 4902443 | Dicarboxylic acid mono-(2-hydroxydodecyl)-esters, their salts and their use as corrosion inhibitors in aqueous systems | Josef Penninger | 1990-02-20 |
| 4789483 | Process for controlling the breaking of oil-in water emulsions | Brigitte Spei | 1988-12-06 |
| 4299725 | Aqueous media of decreased corrosiveness for iron-containing metals | Wolfgang Rupilius, Jurgen Reiffert, Gabriele Rogall | 1981-11-10 |
| 4298568 | Method and composition for inhibiting corrosion of nonferrous metals in contact with water | Werner Gerhardt, Andreas Syldatk, Gabriele Rogall, Jurgen Reiffert, Jens Conrad | 1981-11-03 |