Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5639909 | Production of 2-phosphonobutane-1,2,4-tricarboxylic acid and the alkali metal salts thereof | Christoph Holzner, Hans-Dieter Block, Horst Bertram, Roland Kleinstuck, Hans-Heinrich Moretto | 1997-06-17 |
| 5608099 | Process for the recovery of tributyl phosphate from spent hydraulic oils | Hans-G unter Fr ohlen, Hans-Dieter Block, Hans-Heinrich Moretto, Peter C. Schmidt | 1997-03-04 |