Average Co-Inventor Count = 1.88
ph-index = 11
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Otis Elevator Company (22 from 2,624 patents)
2. Other (1 from 832,912 patents)
23 patents:
1. 8177036 - Communication of elevator reassignment information in a group elevator system
2. 7793762 - Destination entry passenger interface with multiple functions
3. 7597176 - Elevator car position determining system and method using a signal filling technique
4. 7559408 - Correlating sounds to elevators serving destination floors
5. 7353915 - Automatic destination entry system with override capability
6. 7328775 - Destination entry system with delayed elevator car assignment
7. 7202615 - Tubular linear synchronous motor control for elevator doors
8. 6943508 - Tubular linear synchronous motor control for elevator doors
9. 6707374 - Elevator access security
10. 6483047 - Elevator brake load weighing system
11. 6435315 - Absolute position reference system for an elevator
12. 6209685 - Selective, automatic elevator call registering system
13. 5952626 - Individual elevator call changing
14. 5886497 - Control arrangement for escalator or moving walk
15. 5799755 - Linear motor transfer of cab horizontally between elevator and bogey