Average Co-Inventor Count = 6.00
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. Johns Manville (2 from 1,011 patents)
2 patents:
1. 6758305 - Combination sound-deadening board
2. 6715241 - Lightweight sound-deadening board