Average Co-Inventor Count = 2.67
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. Gentex Corporation (2 from 1,403 patents)
2 patents:
1. 4847920 - Dual-visor assembly for helmet
2. 4833735 - Helmet suspension with integrated crown straps and headband