Average Co-Inventor Count = 2.31
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. Westinghouse Air Brake Technologies Corporation (5 from 338 patents)
5 patents:
1. 12012135 - Vehicle warning system
2. 12007787 - Vehicle control system
3. 11001284 - Method for determining location of other trains for PTC purposes
4. 10994651 - Method and system for notifying an operator
5. 10040464 - System and method for providing location and navigation services using positive train control data