Average Co-Inventor Count = 2.00
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)
1 patent:
1. 4314766 - Spectacle cleaning device for domestic use