Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5637560 | Process for the production of surface-active anionic surfactant salts using superheated steam | Wilfried Raehse | 1997-06-10 |
| 5591707 | Process for producing free-flowing granules with superheated steam | Wilfried Raehse, Herbert Pattberg, Kathleen Paatz | 1997-01-07 |