Average Co-Inventor Count = 5.00
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. Nippon Steel Corporation (3,563 patents)
1 patent:
1. 10081042 - Electric resistance welded steel pipe excellent in weld zone and method of production of same