Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4538007 | Process for the simultaneous recovery of 4-hydroxy-diphenyl and 4,4'-dihydroxydiphenyl | Heinz U. Blank, Horst Behre | 1985-08-27 |
| 4467123 | Process for the preparation of alkali metal diphenylates and free hydroxydiphenyls | Dietmar Mayer, Horst-Dieter Kramer, Wilfried Kohler | 1984-08-21 |
| 4393234 | Process for the preparation of 3-hydroxybenzoic acid | Heinz U. Blank, Ernst Goldschmitt, Werner Mentzel | 1983-07-12 |