Average Co-Inventor Count = 2.67
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. Ntn Corporation (2 from 2,464 patents)
2 patents:
1. 7490583 - Full-type rolling bearing and roller cam follower for engine
2. 6666931 - Rolling part and power transmission part