Average Co-Inventor Count = 5.14
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. Essilor International (compagnie General D'optique) (1 from 33 patents)
3. Essilor International (709 patents)
3 patents:
1. 9974435 - Quality control method for optometric measurements
2. 9703122 - Method for determining at least one value of a parameter for customising a visual compensation device
3. 9625743 - Method of preparing an ophthalmic lens fitted with a memory mark