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. Nippon Steel Sumitomo Metal Corporation (1 from 1,102 patents)
2. Vallourec Oil and Gas France (1 from 163 patents)
3. Nippon Steel Corporation (3,562 patents)
1 patent:
1. 10119637 - Assembly for producing a threaded connection for drilling and operating hydrocarbon wells, and resulting threaded connection