Average Co-Inventor Count = 7.17
ph-index = 5
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. Elk Premium Building Products, Inc. (3 from 25 patents)
2. Building Materials Investment Corporation (2 from 284 patents)
5 patents:
1. 8316608 - Enhanced multi-layered shingle
2. 8127514 - Enhanced multi-layered shingle
3. 8006457 - Enhanced multi-layered shingle
4. 7851051 - Roofing material
5. 7833371 - Enhanced multi-layered shingle