Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4827050 | Method for separation of phenols and bases from coal tar oils by extraction | Siegfried Peter, Herbert Beneke, Jurgen Stadelhofer | 1989-05-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4827050 | Method for separation of phenols and bases from coal tar oils by extraction | Siegfried Peter, Herbert Beneke, Jurgen Stadelhofer | 1989-05-02 |