Average Co-Inventor Count = 4.00
ph-index = 3
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 (4 from 3,554 patents)
4 patents:
1. D668323 - Dented steel pipe
2. D661379 - Dented steel pipe
3. D661382 - Dented steel pipe
4. D661383 - Dented steel pipe