Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4459224 | Perfume compositions as well as perfumed articles and materials containing alkyl substituted benzyl cyanides as a fragrance | Antonius J. A. van der Weerdt, Harmannus Boelens | 1984-07-10 |
| 4404127 | Perfume compositions and perfumed materials and articles, containing phenyl-tetrahydrofurans as a fragrance | Antonius J. A. van der Weerdt, Willem Apeldoorn | 1983-09-13 |