Average Co-Inventor Count = 2.00
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. California Institute of Technology (2 from 4,555 patents)
2 patents:
1. 7990543 - Surface characterization based on optical phase shifting interferometry
2. 7538891 - Surface characterization based on lateral shearing of diffracted wave fronts to measure in-plane and out-of-plane displacement gradient fields