Average Co-Inventor Count = 13.04
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. Southwest Petroleum University (3 from 320 patents)
2. Cnpc Bohai Drilling Engineering Company Limited (1 from 2 patents)
2 patents:
1. 11603488 - Process for preparing metal-chelate retarder by sol-gel method
2. 11345844 - Oil well cement slurry high-temperature suspension stabilizer prepared from oil-based shale drilling cuttings