NIPPON OTIS ELEVATOR COMPANY
5Patents
3Active
5Granted
33Portfolio score
Filing activity: Mar 30, 1976 → Dec 12, 2019
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9382098B2 | Elevator device and roller guide assembly | Performing Operations; Transporting | 3 | Active |
| US4084662A | Control apparatus for an elevator system | Performing Operations; Transporting | 2 | Expired |
| US4095678A | Control apparatus for an elevator system | Performing Operations; Transporting | 2 | Expired |
| US11465879B2 | Elevator rope maintenance method | Performing Operations; Transporting | 1 | Active |
| US12384655B2 | Electrical power transmission to elevator system cars | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.