Average Co-Inventor Count = 2.00
ph-index = 2
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 (2 from 2,623 patents)
2 patents:
1. 5747755 - Elevator position compensation system
2. 5387768 - Elevator passenger detector and door control system which masks portions