Lee W. Stepp
22Patents
19h-index
25Co-inventors
81Inventor score
Filing activity: Dec 2, 1981 → Jan 30, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6491116B2 | Frac plug with caged ball | Fixed Constructions | 172 | Expired |
| US6394180B1 | Frac plug with caged ball | Fixed Constructions | 141 | Expired |
| US5394941A | Fracture oriented completion tool system | Fixed Constructions | 107 | Expired |
| US4583593A | Hydraulically activated liner setting device | Fixed Constructions | 68 | Expired |
| US6102117A | Retrievable high pressure, high temperature packer apparatus with anti-extrusion system | Fixed Constructions | 57 | Expired |
| US5109925A | Multiple stage inflation packer with secondary opening rupture disc | Fixed Constructions | 52 | Expired |
| US6666266B2 | Screw-driven wellhead isolation tool | Fixed Constructions | 49 | Expired |
| US4712619A | Poppet valve | Emerging Cross-Sectional Technologies | 45 | Expired |
| US5314015A | Stage cementer and inflation packer apparatus | Fixed Constructions | 44 | Expired |
| US4664188A | Retrievable well packer | Fixed Constructions | 44 | Expired |
| US5381862A | Coiled tubing operated full opening completion tool system | Fixed Constructions | 41 | Expired |
| US4606408A | Method and apparatus for gravel-packing a well | Fixed Constructions | 39 | Expired |
| US6378606B1 | High temperature high pressure retrievable packer with barrel slip | Fixed Constructions | 32 | Expired |
| US6481497B2 | High temperature high pressure retrievable packer with barrel slip | Fixed Constructions | 31 | Expired |
| US6318460A | Retrievable high pressure, high temperature packer apparatus with anti-extrusion system and method | Fixed Constructions | 29 | Expired |
| US4418754A | Method and apparatus for gravel packing a zone in a well | Fixed Constructions | 27 | Expired |
| US7234517B2 | System and method for sensing load on a downhole tool | Fixed Constructions | 25 | Expired |
| US5400855A | Casing inflation packer | Fixed Constructions | 24 | Expired |
| US7048066B2 | Downhole sealing tools and method of use | Fixed Constructions | 21 | Expired |
| US5348089A | Method and apparatus for the multiple stage cementing of a casing string in a well | Fixed Constructions | 19 | Expired |
| US6966386B2 | Downhole sealing tools and method of use | Fixed Constructions | 18 | Expired |
| US4683955A | Automatic fill-up floating apparatus | Fixed Constructions | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.