Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5372727 | Auxiliaries for the filtration and/or dewatering of mineral and coal suspensions | Rita Koester, Horst-Dieter Speckmann, Dieter Koeppl | 1994-12-13 |
| 5308448 | Process for the flotation of fillers from deinked waste paper in the presence of surfactants containing sulfonate groups | Ansgar Behler, Rainer Hoefer, Klaus Hornfeck | 1994-05-03 |