Average Co-Inventor Count = 2.25
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. Park & Diamond Inc. (3 from 3 patents)
3 patents:
1. D1007768 - Helmet core
2. 11523652 - Helmet
3. D907858 - Helmet