Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11142384 | One-way valve | Willem Anker | 2021-10-12 |
| 9657856 | Regulating apparatus for a pressure activated one-way valve | — | 2017-05-23 |
| 6861086 | Method of processing roasted coffee | Willem Anker | 2005-03-01 |
| 6663284 | Pressure sensitive one-way valve | Willem Anker | 2003-12-16 |