Average Co-Inventor Count = 3.00
ph-index = 1
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 (1 from 2,624 patents)
1 patent:
1. 7650971 - Safety lock for elevator landing door detecting intrusion in the shaft through the landing door and elevator thus equipped