Ralph S. Stripling
9Patents
4h-index
33Co-inventors
53Inventor score
Filing activity: May 15, 2002 → Apr 15, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8746413B2 | Single brakeshoe test (electrical) for elevators | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US7249667B2 | Traffic flow indicator for a passenger conveyor | Performing Operations; Transporting | 5 | Expired |
| US6626279B2 | Process for switching between main supply and a frequency inverter and vice versa for an escalator drive | Electricity | 5 | Expired |
| US7568570B2 | Safety monitoring system for a people conveyor | Performing Operations; Transporting | 4 | Expired |
| US8960407B2 | Signal correlation for missing step detection in conveyors | Performing Operations; Transporting | 3 | Active |
| US8141693B2 | Combined traffic flow and maintenance information display for a passenger conveyor | Performing Operations; Transporting | 3 | Active |
| US9637349B2 | Elevator brake including coaxially aligned first and second brake members | Performing Operations; Transporting | 1 | Active |
| US11414297B2 | Elevator safety device | Performing Operations; Transporting | 0 | Active |
| US11673767B2 | Elevator systems | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.