Average Co-Inventor Count = 3.00
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. Essilor International (compagnie Generale D'optique) (2 from 719 patents)
2 patents:
1. 6224210 - Multifocal artificial ocular lens with a transparency varying with illumination
2. 6017121 - Multifocal artificial ocular lens with a transparency varying with