Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879102 | Regeneration of wash solutions containing Fe(II) and Fe(III) chelate complexes | Klaus-Dieter Hoppe, Siegfried Schreiner | 1989-11-07 |
| 4837002 | Removal of chlorate from caustic soda | Dieter Schlaefer, Wolfgang Kochanek | 1989-06-06 |
| 4830842 | Preparation of pure boron trifluoride | Hans H. Reich | 1989-05-16 |