John C. Hedrick
13Patents
4h-index
17Co-inventors
57Inventor score
Filing activity: Sep 12, 1997 → Oct 12, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6494192B1 | On-board fuel vapor collection, condensation, storage and distribution system for a vehicle | Mechanical Engineering; Lighting; Heating | 82 | Expired |
| US5890459A | System and method for a dual fuel, direct injection combustion engine | Emerging Cross-Sectional Technologies | 58 | Expired |
| US6318309A | Opposed piston engine with reserve power capacity | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US7059278B2 | Locomotive engine charge air cooling system and method for cooling the engine | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6227174A | Plunger-activated unit injector for internal combustion engines | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US6062178A | Method of operating uni-flow two-cycle engine during reduced load conditions | Emerging Cross-Sectional Technologies | 3 | Expired |
| US10428707B2 | Partial-flow diesel particulate filter using pressure regulated bypass | Emerging Cross-Sectional Technologies | 2 | Active |
| US9995206B2 | Intake air boost system for two-cycle engine having turbo-supercharger | Emerging Cross-Sectional Technologies | 0 | Active |
| US9803571B2 | Dual-fuel diesel engine with cylinder fueling control of gaseous fueling at less than full loads | Emerging Cross-Sectional Technologies | 0 | Active |
| US10690045B2 | Intake air boost system for two-cycle engine having roots blowers | Emerging Cross-Sectional Technologies | 0 | Active |
| US11333091B2 | Exhaust gas temperature assist for two-cycle uniflow scavenged diesel engines at lower engine loads with various engine operating schemes | Emerging Cross-Sectional Technologies | 0 | Active |
| US6990857B1 | Fuel injector timing tool | Mechanical Engineering; Lighting; Heating | 0 | Expired |
| US10837385B2 | Exhaust gas temperature assist for two-cycle uniflow scavenged diesel engine at lower engine loads | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.