Average Co-Inventor Count = 8.00
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. Nippon Steel Corporation (1 from 3,581 patents)
2. Idemitsu Kosan Company, Limited (1 from 2,278 patents)
1 patent:
1. 11214751 - Metalworking oil composition and metalworking method