Patents per Year
Top Inventors at Northwest Pipe All Time
Showing 1–11 of 11 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Brent Keil | 5 |
| 2 | Bruce VanderPloeg | 1 |
| 2 | Edward Kurth | 1 |
| 2 | Frederick Gobler | 1 |
| 2 | Greg Smith | 1 |
| 2 | Guido Quesada | 1 |
| 2 | Horace M. Jordan | 1 |
| 2 | Igor Palley | 1 |
| 2 | Mark Rydell Cosby | 1 |
| 2 | Roderic A. Schlabach | 1 |
| 2 | Spyridon Karamanos | 1 |
Most Valuable Patents
| Patent | Est. Value | Year |
|---|---|---|
| Pipe joint | $3M | 2020 |
| Pipe ram joint | $2M | 2020 |
| In-pipe hydro-electric power system and turbine | $2M | 2011 |
| Pipe seal and pipe joint | $2M | 2019 |
| Breakaway post slipbase | $1M | 2002 |