Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7073980 | Piling | John James Dougherty | 2006-07-11 |
| 6468003 | Composite pile with tapering lower portion and method for driving pile into granular soil | John James Dougherty | 2002-10-22 |
| 6309143 | Composite pile with tapering lower portion and method for driving pile into granular soil | John James Dougherty | 2001-10-30 |
| 4725167 | Pile driving | — | 1988-02-16 |
| 4462716 | Pile driving | — | 1984-07-31 |
| 4293242 | Piles | — | 1981-10-06 |
| 4199277 | Piling | — | 1980-04-22 |