OTIS ELEVATOR COMPANY
2,615Patents
1,490Active
2,615Granted
58Portfolio score
Filing activity: Apr 7, 1971 → Oct 25, 2024 · 203 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6202799A | Processing and registering automatic elevator cell destinations | Performing Operations; Transporting | 139 | Expired |
| US6397976B1 | Automatic elevator destination call processing | Performing Operations; Transporting | 126 | Expired |
| US5036321A | Capacitive sensing, solid state touch button system | Electricity | 108 | Expired |
| US5984051A | Remote elevator call requests with descriptor tags | Performing Operations; Transporting | 103 | Expired |
| US5606154A | Timed advertising in elevators and other shuttles | Performing Operations; Transporting | 101 | Expired |
| US6173814A | Electronic safety system for elevators having a dual redundant safety bus | Electricity | 96 | Expired |
| US5551532A | Method for transmitting messages in an elevator communications system | Performing Operations; Transporting | 95 | Expired |
| US5159163A | Elevator management system time based security | Performing Operations; Transporting | 93 | Expired |
| US5749443A | Elevator based security system | Performing Operations; Transporting | 93 | Expired |
| US5929400A | Self commissioning controller for field-oriented elevator motor/drive system | Electricity | 84 | Expired |
| US5200583A | Adaptive elevator security system | Performing Operations; Transporting | 84 | Expired |
| US5035302A | """Artificial Intelligence"" based learning system predicting ""Peak-Period"" times for elevator dispatching" | Performing Operations; Transporting | 79 | Expired |
| US5617023A | Industrial contactless position sensor | Physics | 73 | Expired |
| USD830406S1 | Display screen or portion thereof with transitional graphical user interface | General | 71 | Active |
| US6707374B1 | Elevator access security | Performing Operations; Transporting | 67 | Expired |
| USD817351S1 | Display screen or portion thereof with graphical user interface | General | 67 | Active |
| US6435315B1 | Absolute position reference system for an elevator | Performing Operations; Transporting | 67 | Expired |
| US5387768A | Elevator passenger detector and door control system which masks portions of a hall image to determine motion and court passengers | Electricity | 66 | Expired |
| US5711112A | Double-drive automatic sliding door operator | Fixed Constructions | 65 | Expired |
| US4622538A | Remote monitoring system state machine and method | Performing Operations; Transporting | 63 | Expired |
| US5960480A | Fall protection safety suit | Human Necessities | 62 | Expired |
| US6109396A | Remote elevator call placement with provisional call verification | Performing Operations; Transporting | 62 | Expired |
| USD817339S1 | Display screen or portion thereof with graphical user interface | General | 61 | Active |
| US4750591A | Elevator car door and motion sequence monitoring apparatus and method | Physics | 60 | Expired |
| US5854454A | Message routing in control area network (CAN) protocol | Electricity | 60 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.