Average Co-Inventor Count = 12.94
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 (9 from 25 patents)
9 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. 9902890 - Drilling fluid additive composition suitable for coal-bed gas wells, and water-based drilling fluid and use thereof
4. 9890318 - Drilling fluid additive composition and water-based drilling fluid suitable for high-pressure plugging
5. 9834717 - Drilling fluid additive composition and pseudo oil-based drilling fluid suitable for horizontal shale gas wells
6. 9790417 - High-density water-based drilling fluid suitable for horizontal shale gas wells
7. 9790415 - Modified silicon dioxide nano-particles and preparation method thereof, and drilling fluid suitable for shale gas wells
8. 9783725 - Drilling fluid additive composition and water-based drilling fluid suitable for horizontal shale gas wells
9. 9783726 - Environment-friendly water-based drilling fluid applicable to horizontal shale gas wells