Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859602 | Process for the preparation of stereoisomers of 1-aminoalkylphosphonic and phosphinic acids | Josef Maier, Manfred Gloger | 1989-08-22 |
| 4820632 | Agent and process for the detection of redox systems | Gunter Frey | 1989-04-11 |