Average Co-Inventor Count = 2.00
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. Sumitomo Bakelite Company Limited (1 from 612 patents)
2. Nsk-warner K.k. (1 from 363 patents)
1 patent:
1. 11512754 - Phenol resin for wet friction material, phenol resin composition, and wet friction material