Average Co-Inventor Count = 2.00
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. Nikon Corporation (1 from 8,902 patents)
1 patent:
1. 7706074 - Projection optical system, method of manufacturing projection optical system, exposure apparatus, and exposure method