Cutting Elements with Reduced Variable Back Rake Angle
US-2021370419-A1 · Dec 2, 2021 · US
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Cnpc Usa Corp patents in 2021
Cnpc Usa Corp was listed as an assignee on 19 patent publications in 2021.
| Metric | Value |
|---|---|
| Company | Cnpc Usa Corp |
| Year | 2021 |
| Patents | 19 |
Patents
Representative publications for Cnpc Usa Corp in 2021.
Nonionic Surfactants Employed with Extended Chain as the Oil Displacement Agent to use in Enhanced Oil Recovery
US-2021292636-A1 · Sep 23, 2021 · US
Fresh water dissolvable aluminum alloy
US-2021254195-A1 · Aug 19, 2021 · US
Method for dissolvable aluminum alloys
US-2021252574-A1 · Aug 19, 2021 · US
Degradable polymer composition for use in downhole tools and method of manufacturing
US-2021253773-A1 · Aug 19, 2021 · US
Top CPC classifications
Most common classification codes for Cnpc Usa Corp in 2021.
| CPC | Patents |
|---|---|
| E21B10/5673 | 6 |
| C08L33/26 | 4 |
| C09K8/588 | 4 |
| C08F220/56 | 3 |
| E21B10/43 | 3 |
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