Average Co-Inventor Count = 1.00
ph-index = NA
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. Nsk Corporation (2,433 patents)
2. Lube Corporation (14 patents)
3. Sato Special Oil, Ltd. (1 patent)
0 patent: