Average Co-Inventor Count = 4.00
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 3,554 patents)
2. Hitachi Zosen Corporation (1 from 278 patents)
1 patent:
1. 5550347 - Method of reducing welding distortion in one side welding for joining