Average Co-Inventor Count = 3.46
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. Johnson and Johnson Vision Care, Inc. (1 from 882 patents)
2. Essilor International (compagnie Generale D'optique) (1 from 719 patents)
3. Innotech Corporation (1 from 60 patents)
4. Essilor International (709 patents)
3 patents:
1. 8092012 - Single vision spectacle lens
2. 6149271 - Progressive addition lenses
3. 6123422 - Methods for producing progressive addition lenses