Average Co-Inventor Count = 6.67
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. Kabushiki Kaisha Topcon (2 from 1,033 patents)
2 patents:
1. 7341349 - Ophthalmologic apparatus and ophthalmologic chart
2. 7275823 - Optometric device