Average Co-Inventor Count = 3.00
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. Optische Werke G. Rodenstock (3 from 80 patents)
3 patents:
1. 6171525 - Process for the production of a photochromic object
2. 5498686 - Optically transparent photochromic plastic material
3. 4852974 - Anti-reflection film for an optical element consisting of an organic