Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4291170 | Preparation of delta-keto-esters | Johannes H. A. Hofman, Johannes E. L. Claassens | 1981-09-22 |
| 4264501 | Process for the recovery of pyrrolidone-2 | Edmond H. J. P. Bour, Jean M. M. Warnier | 1981-04-28 |