Average Co-Inventor Count = 4.44
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 (1 from 709 patents)
2. Optische Werke G. Rodenstock (1 from 80 patents)
2 patents:
1. 6043885 - Fringe deflectometry apparatus and method
2. 5958810 - Optical glass with varying refraction index