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 | Gerd Zimmermann, Josef Maier | 1989-08-22 |
| 4857462 | Process for obtaining D(+)-naproxen | Josef Maier, Detlef V. Hoerschelmann, Jan Strejcek, Sebastian Heimerl | 1989-08-15 |