Average Co-Inventor Count = 6.00
ph-index = 1
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. Essilor International (Compagnie Generale D'optique) (1 from 719 patents)
2. Essilor International (722 patents)
1 patent:
1. 8703978 - Photochromic dichroic naphtho-pyrans and optical articles containing them