Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5054458 | Combustion engine with fuel injection system, and a spray valve fo r such an engine | Guus Wechem, Fritz Van Den Elst, Philips M. Gerson | 1991-10-08 |
| 5050569 | Fuel injection system for an internal combustion engine and fuel heating device therefor | Frederik M. N. Van Den Elst | 1991-09-24 |
| 4967706 | Internal-combustion engine of the injection type, and plate intended for fitting between the inlet ports of a cylinder block of such an engine and an inlet tube | Gustaaf Louis van Wechem, Arie Van Der Ploeg, Juergen Henke, Erwin Spinner, Peter Frueh | 1990-11-06 |
| 4898142 | Combustion engine with fuel injection system, and a spray valve for such an engine | Guus van Wechem, Frits Van Den Elst, Arie Van Der Ploeg | 1990-02-06 |
| 4382043 | Automatic choke | Hidde Walstra, Peter G. vanRiet Papp | 1983-05-03 |