Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4732745 | Process for making phosphorus pentasulfide | Heinz Stephan, Hermann Niermann | 1988-03-22 |
| 4537756 | Process for the electrothermal production of yellow phosphorus | Karl Rottgen, Joachim Stendel | 1985-08-27 |
| 4399037 | Process for working up waste water containing phosphorus | Johannes Krause, Dietrich Mandelkow | 1983-08-16 |
| 4225347 | Carbon carrier suitable for use in electrothermal reduction processes, and process for making it | Hans-Peter Ebert, Winfried Kern, Hans Rabowsky, Bernhard Schafgen, Joachim Stendel | 1980-09-30 |