Top Inventors at Northwest Pipe All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Brent Keil | 5 |
| 2 | Bruce VanderPloeg | 1 |
| 3 | Edward Kurth | 1 |
| #4 | Frederick Gobler | 1 |
| #5 | Greg Smith | 1 |
| #6 | Guido Quesada | 1 |
| #7 | Horace M. Jordan | 1 |
| #8 | Igor Palley | 1 |
| #9 | Mark Rydell Cosby | 1 |
| #10 | Roderic A. Schlabach | 1 |
| #11 | Spyridon Karamanos | 1 |