Average Co-Inventor Count = 6.00
ph-index = 5
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. Riddell, Inc. (6 from 133 patents)
6 patents:
1. D916385 - Football helmet
2. 10561193 - Protective sports helmet
3. D856600 - Football helmet
4. 10271605 - Protective sports helmet
5. D838922 - Football helmet
6. 9289024 - Protective sports helmet