Average Co-Inventor Count = 4.00
ph-index = 3
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. Norfolk Southern Corporation (3 from 37 patents)
3 patents:
1. 8640629 - Battery-powered all-electric and/or hybrid locomotive and related locomotive and train configurations
2. 8342103 - Battery-powered all-electric locomotive and related locomotive and train configurations
3. 8136454 - Battery-powered all-electric locomotive and related locomotive and train configurations