Average Co-Inventor Count = 5.00
ph-index = 3
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 (3 from 936 patents)
3 patents:
1. 8281520 - Hip, ridge or rake shingle
2. 7921606 - Hip, ridge or rake shingle
3. D633612 - Portable blowing machine hood having a feeder tray for blowing loose fill