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 (3 from 3,568 patents)
3 patents:
1. 4457778 - Steelmaking process with separate refining steps
2. 4411696 - Steelmaking process with separate refining steps
3. 4388112 - Steelmaking process with separate refining steps