Average Co-Inventor Count = 6.00
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. Sport Maska Inc. (1 from 187 patents)
2. E.d. Bullard Company (1 from 53 patents)
2 patents:
1. 11134741 - Protective helmet with a retractable and removable visor
2. D797997 - Helmet visor