Mark Spruce
54Patents
5h-index
18Co-inventors
69Inventor score
Filing activity: Apr 11, 2001 → Sep 10, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US10837370B1 | Gas turbine engine including gearbox structure having stiffness | Emerging Cross-Sectional Technologies | 14 | Active |
| US10982563B1 | Gearboxes for aircraft gas turbine engines | Emerging Cross-Sectional Technologies | 14 | Active |
| US11149652B1 | Gearboxes for aircraft gas turbine engines | Emerging Cross-Sectional Technologies | 11 | Active |
| US10859001B1 | Gas turbine engine having flight cycle ratio | Emerging Cross-Sectional Technologies | 9 | Active |
| US10808626B1 | High power epicyclic gearbox and operation thereof | Emerging Cross-Sectional Technologies | 7 | Active |
| US11085523B2 | Planetary gearing | Emerging Cross-Sectional Technologies | 5 | Active |
| US10961918B1 | Reliable gearbox for gas turbine engine | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US11022044B1 | Geared gas turbine engine | Emerging Cross-Sectional Technologies | 5 | Active |
| US10851715B1 | High power epicyclic gearbox and operation thereof | Emerging Cross-Sectional Technologies | 5 | Active |
| US10816087B2 | Planetary gearing and planet pin for a planetary gearing | Emerging Cross-Sectional Technologies | 4 | Active |
| US10914241B1 | High power epicyclic gearbox and operation thereof | Emerging Cross-Sectional Technologies | 4 | Active |
| US11359548B2 | Reliable gearbox for gas turbine engine | Emerging Cross-Sectional Technologies | 3 | Active |
| US6660130B2 | Apparatus for vaporization of liquids | Emerging Cross-Sectional Technologies | 3 | Expired |
| US11274729B2 | Turbofan gas turbine engine with gearbox | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US10830154B1 | Gas turbine engine having fan shaft stiffness ratio | Emerging Cross-Sectional Technologies | 3 | Active |
| US10767755B2 | Planetary gearing and planet pin for a planetary gearing | Emerging Cross-Sectional Technologies | 3 | Active |
| US11371440B2 | Gearboxes for aircraft gas turbine engines | Emerging Cross-Sectional Technologies | 2 | Active |
| US11408354B2 | Aircraft engine | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US11313438B2 | Turbofan gas turbine engine with gearbox | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US11421552B2 | Gearboxes for aircraft gas turbine engines | Emerging Cross-Sectional Technologies | 1 | Active |
| US11643974B2 | Reliable gearbox for gas turbine engine | Emerging Cross-Sectional Technologies | 1 | Active |
| US10823084B1 | Geared gas turbine engine | Emerging Cross-Sectional Technologies | 1 | Active |
| US11788616B2 | Journal bearing | Emerging Cross-Sectional Technologies | 0 | Active |
| US11378015B2 | Reliable gearbox for gas turbine engine | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US12297779B2 | Geared gas turbine engine | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.