Average Co-Inventor Count = 4.80
ph-index = 3
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 (3 from 2,462 patents)
3 patents:
1. 6227994 - Pulley, ball bearing and belt transmitting device
2. 6010420 - Pulley, ball bearing and fan for preventing the occurence of abnormal
3. 5725448 - Idler pulley