Average Co-Inventor Count = 4.29
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. Kabushiki Kaisha Topcon (4 from 1,033 patents)
4 patents:
1. 5903334 - Ophthalmologic apparatus and ophthalmologic-data management system for
2. 5668623 - Corneal shape measuring apparatus
3. 5374967 - Ophthalmological image processing system
4. 5291231 - Opthalmological image processing system