Average Co-Inventor Count = 1.20
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. Precision-Cosmet Company, Inc. (2 from 12 patents)
2. Pilkington Visioncare, Inc. (1 from 11 patents)
3 patents:
1. 4940762 - Oxygen permeable lens with hydrolyzable silicon group
2. 4611039 - Wettable, gas permeable contact lens
3. 4581184 - Oxygen permeable lens