Edwin Zwald
22Patents
12h-index
22Co-inventors
73Inventor score
Filing activity: Nov 22, 2002 → Sep 11, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6976541B2 | Liner hanger with sliding sleeve valve | Fixed Constructions | 49 | Expired |
| US7100685B2 | Mono-diameter wellbore casing | Emerging Cross-Sectional Technologies | 39 | Expired |
| US7231985B2 | Radial expansion of tubular members | Emerging Cross-Sectional Technologies | 28 | Expired |
| US7168499B2 | Radial expansion of tubular members | Emerging Cross-Sectional Technologies | 23 | Expired |
| US7172021B2 | Liner hanger with sliding sleeve valve | Fixed Constructions | 23 | Expired |
| US7270188B2 | Radial expansion of tubular members | Emerging Cross-Sectional Technologies | 22 | Expired |
| US7172019B2 | Method and apparatus for forming a mono-diameter wellbore casing | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7172024B2 | Mono-diameter wellbore casing | Fixed Constructions | 18 | Expired |
| US7146702B2 | Method and apparatus for forming a mono-diameter wellbore casing | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7275601B2 | Radial expansion of tubular members | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7246667B2 | Radial expansion of tubular members | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7546881B2 | Apparatus for radially expanding and plastically deforming a tubular member | Fixed Constructions | 15 | Active |
| US7363691B2 | Method and apparatus for forming a mono-diameter wellbore casing | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7201223B2 | Method and apparatus for forming a mono-diameter wellbore casing | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7204007B2 | Method and apparatus for forming a mono-diameter wellbore casing | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7357190B2 | Radial expansion of tubular members | Emerging Cross-Sectional Technologies | 9 | Expired |
| US7299881B2 | Radial expansion of tubular members | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7779923B2 | Methods and apparatus for anchoring and expanding tubular members | Fixed Constructions | 8 | Active |
| US7325602B2 | Method and apparatus for forming a mono-diameter wellbore casing | Emerging Cross-Sectional Technologies | 8 | Active |
| US7308755B2 | Apparatus for forming a mono-diameter wellbore casing | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7823659B2 | Apparatus and methods for drilling and lining a wellbore | Fixed Constructions | 4 | Active |
| US7363690B2 | Method and apparatus for forming a mono-diameter wellbore casing | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.