Average Co-Inventor Count = 4.17
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. Transportation IP Holdings, LLC (3 from 538 patents)
2. Westinghouse Air Brake Technologies Corporation (1 from 338 patents)
4 patents:
1. 11871234 - Secure vehicle to vehicle PTC communication
2. 11527151 - System and method for monitoring traffic control devices
3. 11208130 - Method and apparatus to improve unmonitored switch position reporting
4. 11176811 - System and method for monitoring traffic control devices