Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5085842 | Process for scavenging hydrogen sulfide using glyoxal | Christoph Porz, Bernd Christensen, Elena Kyaw-Naing, Erich Paulus | 1992-02-04 |
| 4600516 | Sulfonated tributylphenol ethoxylates, their use, and a process for preparing sulfonated alkoxylates | Norbert Wester, Klaus-Martin Uhl, Gerhart Schneider | 1986-07-15 |
| 4521579 | High molecular weight water-soluble polymers useful in deoiling sand and rock masses | Friedrich Engelhardt, Hermann Schmitz, Jorg Hax | 1985-06-04 |
| 4451631 | Agent and method for deoiling sand and rock masses | Friedrich Engelhardt, Hermann Schmitz, Jorg Hax | 1984-05-29 |