Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9879440 | Fiber reinforced resin polymer mortar pole | Ralph Friedrich, Ron G. Ulrich, James W. Davidson, David Jones, Ronald A. Viegl +1 more | 2018-01-30 |
| 9057204 | Fiber reinforced resin polymer mortar pole | Ralph Friedrich, Ron G. Ulrich, James W. Davidson, David Jones, Ronald A. Viegl +1 more | 2015-06-16 |
| 6170891 | Closure for secondary containment pipe | Joie L. Folkers, Robert Baxter | 2001-01-09 |
| 5108135 | Fiber reinforced plastic pipe tee | — | 1992-04-28 |
| 4875710 | Abrasive threaded fiberglass pipe joint | — | 1989-10-24 |