Average Co-Inventor Count = 13.48
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. Hitachi, Ltd. (2 from 42,508 patents)
2. Central Japan Railway Company (2 from 118 patents)
3. A & F Corporation (2 from 2 patents)
2 patents:
1. D884557 - Rail vehicle
2. D867208 - Rail vehicle