Average Co-Inventor Count = 3.00
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 3,542 patents)
2. Vallourec Oil and Gas France (1 from 162 patents)
1 patent:
1. 12066130 - Threaded connection partially in a self-locking engagement with an external shoulder capable to resist elevated torque