Average Co-Inventor Count = 4.80
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 (4 from 2,619 patents)
2. Chinese Academy of Sciences (3,100 patents)
3. Beijing Institute of Spacecraft Environment Engineering (2 patents)
4 patents:
1. 12240732 - Notification system and method for an elevator and an elevator system
2. 11577930 - Automatic elevator calling system and a method for controlling automatic calling elevator
3. 11524867 - Determination of non-normal elevator calling request in an automatic elevator calling request system
4. 11332341 - Personal mobile terminal and a method of requesting elevator service