Douglas A. Watson
4Patents
2h-index
2Co-inventors
34Inventor score
Filing activity: Jun 3, 2004 → Jul 14, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7093679B1 | Foundation drilling apparatus and method with continuously variable hydraulic differential rotary table | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US10890033B1 | Kelly bar with locking feature, related system and method | Fixed Constructions | 2 | Active |
| US11725457B2 | Drilling apparatus and related method | Fixed Constructions | 0 | Active |
| US11414929B2 | Drilling apparatus and related method | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.