Average Co-Inventor Count = 4.36
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. Nippon Steel Corporation (1 from 3,568 patents)
2. Nippon Steel Sumitomo Metal Corporation (1 from 1,102 patents)
3. Central Japan Railway Company (1 from 118 patents)
2 patents:
1. 11505221 - Floating caliper brake device for railroad vehicle
2. 9371078 - Caliper brake device for railway vehicles