Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818409 | Obtaining aqueous solutions of organic acids or bases from aqueous solutions of their salts | Hartwig Voss | 1989-04-04 |
| 4802965 | Concentrating aqueous solutions of organic compounds which contain salts, with simultaneous reduction of the salt content | Eckhard Roske | 1989-02-07 |