Average Co-Inventor Count = 3.46
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. Elk Premium Building Products, Inc. (2 from 25 patents)
2. Building Materials Investment Corporation (1 from 284 patents)
3 patents:
1. 8536077 - Flooring underlayment membrane
2. 8389103 - Roofing material
3. 6673432 - Water vapor barrier structural article