Average Co-Inventor Count = 3.75
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. New York Air Brake Corporation (2 from 291 patents)
2 patents:
1. 9475511 - Parallel tracks design description
2. 9469316 - Using wayside signals to optimize train driving under an overarching railway network safety system