Patents per Year
Top Inventors at Unit Rig & Equipment All Time
Showing 1–24 of 24 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Charles R. Satterwhite | 4 |
| 2 | Frederick W. Loeber | 3 |
| 2 | George O. Greene | 3 |
| #4 | Nolan W. Cummins | 2 |
| #4 | Robert M. Fornell | 2 |
| #4 | Rodger L. Modglin | 2 |
| #7 | Jim Hein | 1 |
| #7 | Brian G. Anderson | 1 |
| #7 | Earl A. Beck | 1 |
| #7 | Floyd E. McCann | 1 |
| #7 | Harlan H. Henke | 1 |
| #7 | Harry Van Dyke | 1 |
| #7 | Hubert J. McAulay | 1 |
| #7 | Jimmy G. Foster, Sr. | 1 |
| #7 | John A. Walker | 1 |
| #7 | Mark Morgan | 1 |
| #7 | Orville B. Francis | 1 |
| #7 | Ronald R. Massie | 1 |
| #7 | Sabern D. Buchanan | 1 |
| #7 | Stephen L. Faulkner | 1 |
| #7 | Timothy W. Roberts | 1 |
| #7 | William R. Borthick | 1 |
| #7 | Terrence L. Doden | 1 |
| #7 | W. Ray Borthick | 1 |
Most Valuable Patents
| Patent | Est. Value | Year |
|---|---|---|
| Crimping tool | $2M | 1981 |
| Vent accumulator for hydraulic integrator | $2M | 1981 |
| Side cutter apparatus for an excavating machine | $2M | 1981 |
| Conveyor folding and deflector operation for excavating and loading systems | $2M | 1980 |
| Dual steering system for off-highway vehicles | $2M | 1980 |