Average Co-Inventor Count = 6.00
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 & Sumitomo Metal Corporation (1 from 1,098 patents)
1 patent:
1. 9545658 - Piercing apparatus, plug used for piercing apparatus, and method for producing seamless steel pipe