Average Co-Inventor Count = 2.25
ph-index = 3
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) (3 from 719 patents)
3 patents:
1. D748268 - Tracer-centrer-blocker for ophthalmic lenses and spectacle frames
2. D740949 - Ophthalmic lens edger
3. D697215 - Apparatus for acquisition of facial parameters