Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837055 | Supported membrane and process for its preparation | — | 1989-06-06 |
| 4810366 | Process for separating a fluid feed mixture containing hydrocarbon oil and an organic solvent | Johannes Pieter HAAN | 1989-03-07 |