Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4477678 | Sulfur-containing flavoring agents | Dirk K. Kettenes, Kris B. de Ross, Gerben Sipma, Jan Stoffelsma | 1984-10-16 |
| 4414233 | Methylthiomethyl esters as flavor additives | Evert van't Land, Jan Stoffelsma | 1983-11-08 |
| 4380655 | Novel sulfur-containing flavoring agents | Dirk K. Kettenes, Kris Bart de Roos, Gerben Sipma, Jan Stoffelsma | 1983-04-19 |
| 4332829 | Methylthiomethyl esters as flavor additives | Evert van't Land, Jan Stoffelsma | 1982-06-01 |