Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6143860 | Polyketone polymer composition | Abraham Adriaan Smaardijk | 2000-11-07 |
| 5990259 | Polyketone polymer composition | Abraham Adriaan Smaardijk | 1999-11-23 |
| 4492388 | Collapsible shopping cart | — | 1985-01-08 |
| 4492867 | Method of and apparatus for determining the state of ageing of plastic products | Johannes J. Laarhoven, Jan P. van Dongeren, Louis Marie SMEETS | 1985-01-08 |