Average Co-Inventor Count = 3.43
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. Nikon Corporation (1 from 8,891 patents)
2. Nuflare Technology, Inc. (1 from 716 patents)
2 patents:
1. 7872745 - Pattern inspection apparatus and pattern inspection method
2. 4870693 - Mask inspecting apparatus