Robert Hefner
5Patents
3h-index
15Co-inventors
54Inventor score
Filing activity: Dec 23, 1982 → Aug 8, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6389343B1 | Steering resistance device | Performing Operations; Transporting | 25 | Expired |
| US5109696A | Powertrain performance assessment system | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4485220A | Polyoxazoline modified unsaturated polyesteramides | Chemistry; Metallurgy | 7 | Expired |
| US4694928A | Operator restraint system | Performing Operations; Transporting | 2 | Expired |
| US10051717B2 | Electrostatic noise grounding system for use in a wind turbine and a rotor and wind turbine comprising the same | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.