Average Co-Inventor Count = 4.00
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 1,101 patents)
2. Vallourec Oil and Gas France (1 from 163 patents)
3. Sumitomo Metal Industries, Inc. (929 patents)
4. Vallourec & Mannesmann Oil & Gas France (62 patents)
1 patent:
1. 9395028 - Method for finishing a tubular threaded member with a dry protection coating