David Mason
14Patents
8h-index
27Co-inventors
68Inventor score
Filing activity: Sep 4, 1992 → Apr 26, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5340182A | Safety elevator | Fixed Constructions | 93 | Expired |
| US7591304B2 | Pipe running tool having wireless telemetry | Fixed Constructions | 50 | Expired |
| US6845814B2 | Pipe-gripping structure having load rings | Emerging Cross-Sectional Technologies | 41 | Expired |
| US7699121B2 | Pipe running tool having a primary load path | Fixed Constructions | 36 | Expired |
| US6896048B2 | Rotary support table | Fixed Constructions | 31 | Expired |
| US7287544B2 | Triple valve blow out preventer | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6776070B1 | Iron roughneck | Fixed Constructions | 20 | Expired |
| US6935204B2 | Automated manual transmission and shift method | Emerging Cross-Sectional Technologies | 12 | Expired |
| US8356674B2 | Tubular running tool and methods of use | Fixed Constructions | 8 | Active |
| US7510006B2 | Pipe running tool having a cement path | Fixed Constructions | 7 | Expired |
| US7121295B2 | Internal blow out preventer ball and seat | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7753138B2 | Pipe running tool having internal gripper | Fixed Constructions | 3 | Expired |
| US6915857B2 | Non-seize material attachment for a drill slip system | Fixed Constructions | 0 | Expired |
| US6758280B2 | Non-seize material attachment for a drill slip system | Fixed Constructions | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.