Average Co-Inventor Count = 6.46
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 2,624 patents)
2 patents:
1. 6305499 - Drum drive elevator using flat belt
2. 5907136 - Adjustable double-deck elevator