Arylaminosilane compound, propylene polymerization catalyst and preparation thereof
US-11535638-B2 · Dec 27, 2022 · US
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Petrochina Co Ltd patents in 2022
Petrochina Co Ltd was listed as an assignee on 25 patent publications in 2022.
| Metric | Value |
|---|---|
| Company | Petrochina Co Ltd |
| Year | 2022 |
| Patents | 25 |
Patents
Representative publications for Petrochina Co Ltd in 2022.
Seismic full horizon tracking method, computer device and computer-readable storage medium
US-11531130-B2 · Dec 20, 2022 · US
Nonionic Gemini surfactant of (octylphenol polyoxyethylene ether disubstituted) dicarboxylic acid diphenyl ether and its synthesis method
US-11505734-B2 · Nov 22, 2022 · US
Permanent packer and extended gas lift method using permanent packer
US-2022349282-A1 · Nov 3, 2022 · US
Borehole wall resistance increasing apparatus for improving energy utilization rate of injection gas
US-11428065-B2 · Aug 30, 2022 · US
Top CPC classifications
Most common classification codes for Petrochina Co Ltd in 2022.
| CPC | Patents |
|---|---|
| C09K8/584 | 3 |
| E21B43/168 | 3 |
| E21B43/26 | 3 |
| E21B49/00 | 3 |
| G01N33/241 | 3 |
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