Average Co-Inventor Count = 5.00
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. 6401875 - Absolute position sensing method and apparatus for synchronous elevator machines by detection stator iron saturation