Harold Durling
17Patents
8h-index
6Co-inventors
65Inventor score
Filing activity: Sep 9, 1975 → Sep 7, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5421300A | Torch jet spark plug | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4017125A | Inversion brake valve and system therefor | Performing Operations; Transporting | 21 | Expired |
| US4121873A | Vehicle air brake system with emergency features | Performing Operations; Transporting | 19 | Expired |
| US6588392B2 | Fuel efficient powertrain system | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4204555A | Exhaust valve assembly | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5405280A | Integrated molding and inking process for forming a torch jet spark plug | Electricity | 12 | Expired |
| US4050746A | Inversion brake valve and system therefor | Performing Operations; Transporting | 11 | Expired |
| US4043351A | Fluid valve including electrical circuit control | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6213085A | Directed jet spark plug | Electricity | 8 | Expired |
| US6359377B1 | Spark plug with engine cylinder pressure sensor | Physics | 7 | Expired |
| US7021275B2 | Igniter for internal combustion engines operating over a wide range of air fuel ratios | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4191428A | Air brake system with pressure holding valve | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4030757A | Tractor-mounted cargo-trailer brake control system | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4119351A | Air brake system with pressure holding valve | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6509676B1 | Spark plug construction for enhanced heat transfer | Electricity | 5 | Expired |
| US6192324A | On-board diagnosis of emissions from catalytic converters | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4302057A | Pneumatic control valve | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.