Mechanical support ring for elastomer seal
US-2018334879-A1 · Nov 22, 2018 · US
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Cnpc Usa Corp patents in 2018
Cnpc Usa Corp was listed as an assignee on 15 patent publications in 2018.
| Metric | Value |
|---|---|
| Company | Cnpc Usa Corp |
| Year | 2018 |
| Patents | 15 |
Patents
Representative publications for Cnpc Usa Corp in 2018.
Convex ridge type non-planar cutting tooth and diamond drill bit
US-10125552-B2 · Nov 13, 2018 · US
Crosslinked high molecular weight polymers for use in water-based drilling fluids
US-10072197-B2 · Sep 11, 2018 · US
Method for a fracturing fluid system at high temperatures
US-10066151-B2 · Sep 4, 2018 · US
Method for a fracturing fluid system at high temperatures
US-2018223174-A1 · Aug 9, 2018 · US
Top CPC classifications
Most common classification codes for Cnpc Usa Corp in 2018.
| CPC | Patents |
|---|---|
| C08F220/56 | 5 |
| C09K2208/26 | 4 |
| C09K8/035 | 4 |
| C09K8/685 | 4 |
| C09K8/885 | 4 |
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