Average Co-Inventor Count = 21.01
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. Petrochina Company Limited (1 from 161 patents)
1 patent:
1. 10928282 - Method and device for determining elasticity of cement stone utilized in well cementing of oil-gas well