Average Co-Inventor Count = 7.45
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 (3 from 3,562 patents)
2. Fine Sinter Co., Ltd (3 from 17 patents)
3 patents:
1. 11674206 - Sintered friction material for railway vehicles and method for producing the same
2. 11578775 - Brake lining for railway vehicle, disc brake system for railway vehicle including same, and sintered friction material to be used for brake lining for railway vehicle
3. 11534829 - Sintered friction material