Average Co-Inventor Count = 5.00
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. Other (1 from 832,891 patents)
2. Sumita Optical Glass, Inc. (1 from 55 patents)
1 patent:
1. 11598947 - Relay optical system for rigid endoscope