Average Co-Inventor Count = 2.12
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. E.d. Bullard Company (3 from 53 patents)
3 patents:
1. 11134741 - Protective helmet with a retractable and removable visor
2. 11096439 - Protective helmet headband for accommodating multiple head sizes and/or shapes
3. D900400 - Protective helmet