Average Co-Inventor Count = 6.46
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 Kokan Kabushiki Kaisha (2 from 487 patents)
2 patents:
1. 4539043 - Bottom-blown gas blowing nozzle
2. 4438907 - Gas blowing nozzle, and production and usage thereof