Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5162551 | Process for the preparation of dihydropyrans | Nicolaas L. J. M. Broekhof | 1992-11-10 |
| 4643844 | Perfume compositions and perfumed articles containing dihydro- and/or tetrahydro-naphthols as fragrance material | Nicolaas L. J. M. Broekhof, Antonius J. A. van der Weerdt | 1987-02-17 |