Average Co-Inventor Count = 6.54
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 (3 from 2,614 patents)
3 patents:
1. 10252887 - Locking system for trap or panels of an elevator car and method of controlling access to an elevator shaft from inside the car
2. 8365870 - Foldable handrail and safety switch arrangement on top of an elevator car
3. 8162108 - Elevator having a limit switch for controlling power to the drive system as an elevator car approaches a shallow pit or a low overhead