Roger W. Johnson
5Patents
5h-index
10Co-inventors
60Inventor score
Filing activity: Jan 27, 1975 → Oct 30, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4249382A | Exhaust gas recirculation system for turbo charged engines | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5118562A | Vibration damper having extended temperature range and low temperature shock resistance | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5403426A | Process of making cardable hydrophobic polypropylene fiber | Emerging Cross-Sectional Technologies | 23 | Expired |
| US3972644A | Vane control arrangement for variable area turbine nozzle | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US6882956B2 | Lapping plate topography system | Physics | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.