Average Co-Inventor Count = 2.00
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. 5192376 - Process for producing automobile body reinforcing steel pipe
2. 5181974 - Automobile body reinforcing steel pipe