Lawrence E. Portlock
52Patents
11h-index
11Co-inventors
75Inventor score
Filing activity: Dec 1, 2004 → Aug 29, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7959532B2 | Hydraulic seal for a gearbox of a tip turbine engine | Mechanical Engineering; Lighting; Heating | 50 | Active |
| US8020665B2 | Lubrication system with extended emergency operability | Mechanical Engineering; Lighting; Heating | 48 | Active |
| US8484942B1 | Planetary gear system arrangement with auxiliary oil system | Emerging Cross-Sectional Technologies | 47 | Active |
| US8215454B2 | Lubrication system with tolerance for reduced gravity | Emerging Cross-Sectional Technologies | 33 | Active |
| US8083030B2 | Gearbox lubrication supply system for a tip engine | Emerging Cross-Sectional Technologies | 24 | Active |
| US8894538B2 | Gas turbine engine with geared architecture | Mechanical Engineering; Lighting; Heating | 22 | Active |
| US8267826B2 | Uninterruptible oil supply in planetary system | Mechanical Engineering; Lighting; Heating | 22 | Active |
| US8561383B2 | Turbine engine with differential gear driven fan and compressor | Mechanical Engineering; Lighting; Heating | 18 | Active |
| US8931285B2 | Planetary gear system arrangement with auxiliary oil system | Emerging Cross-Sectional Technologies | 17 | Active |
| US8939864B2 | Gas turbine engine lubrication | Mechanical Engineering; Lighting; Heating | 14 | Active |
| US8753243B2 | Ring gear mounting arrangement with oil scavenge scheme | Emerging Cross-Sectional Technologies | 12 | Active |
| US8858388B2 | Gas turbine engine gear train | Mechanical Engineering; Lighting; Heating | 11 | Active |
| US8708863B2 | Epicyclic gear train | Mechanical Engineering; Lighting; Heating | 11 | Active |
| US8292570B2 | Low pressure turbine with counter-rotating drives for single spool | Mechanical Engineering; Lighting; Heating | 11 | Active |
| US9976437B2 | Epicyclic gear train | Emerging Cross-Sectional Technologies | 11 | Active |
| US8491436B2 | Uninterruptible oil supply in planetary system | Mechanical Engineering; Lighting; Heating | 11 | Active |
| US10082105B2 | Gas turbine engine with geared architecture | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US7959406B2 | Close coupled gearbox assembly for a tip turbine engine | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US10527151B1 | Gas turbine engine with geared architecture | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US10570855B2 | Gas turbine engine with geared architecture | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US8757959B2 | Tip turbine engine comprising a nonrotable compartment | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US9115650B2 | Ring gear mounting arrangement with oil scavenge scheme | Emerging Cross-Sectional Technologies | 6 | Active |
| US9677420B2 | Planetary gear system arrangement with auxiliary oil system | Emerging Cross-Sectional Technologies | 5 | Active |
| US8511435B2 | Lubrication system with extended emergency operability | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US9995174B2 | Planetary gear system arrangement with auxiliary oil system | Emerging Cross-Sectional Technologies | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.