Inventor
Zaoyuan LI
Inventor
CN
Overview
Patents· 3 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C04Bprimary
C04BLime, magnesia23%
C09KMaterials for miscellaneous applications, not provided for elsewhere23%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium8%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds8%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds8%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients8%
C08LCompositions of macromolecular compounds8%
E21BEarth or rock drilling8%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management8%
PatentTitleYear
12,473,483Low-molecular-weight composite contamination-resistant additive for well cementing202511,603,488Process for preparing metal-chelate retarder by sol-gel method202311,345,844Oil well cement slurry high-temperature suspension stabilizer prepared from oil-based shale drilling cuttings2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022–2025Patents assigned to UNIV SOUTHWEST PETROLEUM (3)· patent assignee history
2022Patents assigned to SOUTHWEST PETROLEUM UNIV ENVIORMENTAL PROTECTION TECHNOLOGY CHENGDU CO LTD (1)· patent assignee history
2022Patents assigned to SOUTHWEST PETROLEUM UNIV ENVIRONMENTAL PROTECTION TECHNOLOGY CHENGDU CO LTD (1)· patent assignee history
2022–2025Based in CN· patent location history
2023Patents assigned to CNPC BOHAI DRILLING ENG CO LTD (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| UNIV SOUTHWEST PETROLEUM | 3 | 2022–2025 |
| CNPC BOHAI DRILLING ENG CO LTD | 1 | 2023 |
| SOUTHWEST PETROLEUM UNIV ENVIORMENTAL PROTECTION TECHNOLOGY CHENGDU CO LTD | 1 | 2022 |
| SOUTHWEST PETROLEUM UNIV ENVIRONMENTAL PROTECTION TECHNOLOGY CHENGDU CO LTD | 1 | 2022 |
Locations
| Location | Patents | Span |
|---|---|---|
| CN | 3 | 2022–2025 |