Average Co-Inventor Count = 22.22
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. Chinese Academy of Sciences (1 from 3,086 patents)
2. Institute of Geology and Geophysics (1 from 3 patents)
2 patents:
1. 11371921 - Clamp and shear test device
2. 11287356 - Variable angle loading testing machine