Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853145 | Alkyl and alkenyl diethanolamine compounds as solubilizers for low-foam surfactants | Karl Schmid, Detlev Stanislowski | 1989-08-01 |
| 4797222 | Foam inhibitor mixture | Rainer Hoefer, Karl Schmid, Uwe Held | 1989-01-10 |