Average Co-Inventor Count = 3.43
ph-index = 2
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. Ntn Corporation (2 from 2,462 patents)
2 patents:
1. 5207513 - Rolling bearing with solid lubricant
2. 5164256 - Porous slide bearing and method for manufacturing the same