Average Co-Inventor Count = 5.33
ph-index = 2
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 (2 from 3,542 patents)
2 patents:
1. 6649860 - Transfer type plasma heating anode
2. 6443221 - Continuous casting apparatus for molten metal