Lawrence J. Leising
27Patents
15h-index
35Co-inventors
81Inventor score
Filing activity: May 31, 1985 → Dec 19, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6419014B1 | Apparatus and method for orienting a downhole tool | Fixed Constructions | 126 | Expired |
| US4637479A | Methods and apparatus for controlled directional drilling of boreholes | Fixed Constructions | 113 | Expired |
| US5311952A | Apparatus and method for directional drilling with downhole motor on coiled tubing | Fixed Constructions | 109 | Expired |
| US6808023B2 | Disconnect check valve mechanism for coiled tubing | Fixed Constructions | 78 | Expired |
| US5417291A | Drilling connector | Fixed Constructions | 47 | Expired |
| US6889771B1 | Selective direct and reverse circulation check valve mechanism for coiled tubing | Fixed Constructions | 43 | Expired |
| US8191416B2 | Instrumented formation tester for injecting and monitoring of fluids | Fixed Constructions | 31 | Active |
| US7543648B2 | System and method utilizing a compliant well screen | Fixed Constructions | 29 | Active |
| US6349768B1 | Method and apparatus for all multilateral well entry | Fixed Constructions | 26 | Expired |
| US7493960B2 | Apparatus and method to connect two parts without rotation | Fixed Constructions | 26 | Active |
| US6571870B2 | Method and apparatus to vibrate a downhole component | Fixed Constructions | 24 | Expired |
| US6173771A | Apparatus for cleaning well tubular members | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US6604582B2 | Downhole fluid pressure signal generation and transmission | Emerging Cross-Sectional Technologies | 23 | Expired |
| US7497259B2 | System and method for forming cavities in a well | Fixed Constructions | 19 | Active |
| US6907927B2 | Method and apparatus to vibrate a downhole component | Fixed Constructions | 15 | Expired |
| US7640991B2 | Downhole tool actuation apparatus and method | Fixed Constructions | 15 | Active |
| US7219726B2 | Method and apparatus to vibrate a downhole component | Fixed Constructions | 14 | Expired |
| US7857067B2 | Downhole application for a backpressure valve | Fixed Constructions | 11 | Active |
| US6915845B2 | Re-enterable gravel pack system with inflate packer | Fixed Constructions | 8 | Expired |
| US7461695B2 | System and method for creating packers in a wellbore | Fixed Constructions | 8 | Expired |
| US7918279B2 | System and method for forming cavities in a well | Fixed Constructions | 6 | Active |
| US6401812B2 | Method and apparatus for multilateral well entry | Fixed Constructions | 6 | Expired |
| US7281588B2 | Tubular injector apparatus and method of use | Fixed Constructions | 6 | Expired |
| US5660241A | Pressure compensated weight on bit shock sub for a wellbore drilling tool | Fixed Constructions | 6 | Expired |
| US9784043B2 | Releasable connection for coiled tubing drilling apparatus | Fixed Constructions | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.