Average Co-Inventor Count = 10.66
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. China University of Petroleum (5 from 25 patents)
5 patents:
1. 10030188 - Nano-hybrid lubricant and method thereof, and oil-based drilling fluid
2. 10000684 - Drilling fluid additive composition, and oil-based drilling fluid and use thereof
3. 9745501 - Additive composition suitable for viscosity reduction of oil-based drilling fluid, oil-based drilling fluid and use thereof
4. 9528042 - Drilling fluid additive composition and super high temperature super high density clay-free oil-in-water drilling fluid
5. 9481822 - Drilling fluid additive composition and high temperature resistant clay-free whole-oil-based drilling fluid