John Ferrisi
7Patents
4h-index
25Co-inventors
57Inventor score
Filing activity: Dec 11, 1997 → Mar 19, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5950771A | Roller guide friction damper | Performing Operations; Transporting | 9 | Expired |
| US8307952B2 | Elevator system with multiple cars in a hoistway | Performing Operations; Transporting | 9 | Active |
| US8820483B2 | Elevator machine support | Performing Operations; Transporting | 6 | Active |
| US6032764A | Roller guide assembly with sound isolation | Performing Operations; Transporting | 4 | Expired |
| US7753175B2 | Elevator car having an angled underslung roping arrangement | Performing Operations; Transporting | 4 | Expired |
| US10011463B2 | Elevator door friction belt drive including one or more markers | Performing Operations; Transporting | 1 | Active |
| US11325809B2 | Monitoring roller guide health | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.