Average Co-Inventor Count = 4.00
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. Certainteed Corporation (2 from 936 patents)
2 patents:
1. 8820021 - Pre-assembled hip, ridge or rake shingle
2. 8216407 - Pre-assembled hip, ridge or rake shingle