Average Co-Inventor Count = 1.33
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. Other (2 from 832,843 patents)
2 patents:
1. 5666670 - Protective helmet
2. 5535454 - Protective helmet with hair entraining aperture