William R. Garrett
32Patents
16h-index
9Co-inventors
74Inventor score
Filing activity: Dec 22, 1975 → Aug 1, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4480703A | Drilling head | Fixed Constructions | 98 | Expired |
| US4304310A | Drilling head | Fixed Constructions | 81 | Expired |
| US4281724A | Drilling head | Fixed Constructions | 75 | Expired |
| US4615401A | Automatic hydraulic thruster | Emerging Cross-Sectional Technologies | 68 | Expired |
| US4285406A | Drilling head | Fixed Constructions | 53 | Expired |
| US4478244A | Mud saver valve | Emerging Cross-Sectional Technologies | 50 | Expired |
| US4662461A | Fixed-contact stabilizer | Fixed Constructions | 49 | Expired |
| US4146060A | Drill pipe wear belt assembly | Performing Operations; Transporting | 46 | Expired |
| US4434863A | Drill string splined resilient tubular telescopic joint for balanced load drilling of deep holes | Fixed Constructions | 45 | Expired |
| US4281726A | Drill string splined resilient tubular telescopic joint for balanced load drilling of deep holes | Fixed Constructions | 36 | Expired |
| US4040495A | Drilling apparatus | Fixed Constructions | 33 | Expired |
| US4171560A | Method of assembling a wear sleeve on a drill pipe assembly | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4436118A | Sleeved drill pipe | Performing Operations; Transporting | 19 | Expired |
| US4182425A | Reamer | Fixed Constructions | 17 | Expired |
| US4396234A | Weldable blade stabilizer | Fixed Constructions | 17 | Expired |
| US4561508A | Roller-reamer | Fixed Constructions | 16 | Expired |
| US4189012A | Earth boring tool | Fixed Constructions | 16 | Expired |
| US4416476A | Intermediate weight drill stem member | Fixed Constructions | 15 | Expired |
| US4378852A | Wedge lock stabilizer | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4261426A | Reamer stabilizer | Fixed Constructions | 11 | Expired |
| US4449897A | Single-acting piston pump having two heads | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4217966A | Junk basket, bit and reamer stabilizer | Fixed Constructions | 10 | Expired |
| US4458404A | Method of making sleeved drill pipe | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4522234A | Multiple conduit drill pipe | Fixed Constructions | 8 | Expired |
| US4078012A | Olefin metathesis catalysts and process utilizing same | Emerging Cross-Sectional Technologies | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.