Oil well optical fiber multi-parameter testing method and apparatus
US-12509985-B2 · Dec 30, 2025 · US
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Petrochina Co Ltd patents in 2025
Petrochina Co Ltd was listed as an assignee on 14 patent publications in 2025.
| Metric | Value |
|---|---|
| Company | Petrochina Co Ltd |
| Year | 2025 |
| Patents | 14 |
Patents
Representative publications for Petrochina Co Ltd in 2025.
Catalyst composition for polymerization of α-olefin and preparation and use thereof
US-12503523-B2 · Dec 23, 2025 · US
Olefin polymerization metallocene catalyst composition, preparation thereof and use thereof
US-2025382400-A1 · Dec 18, 2025 · US
Oil well optical fiber multi-parameter testing method and apparatus
US-2025305411-A1 · Oct 2, 2025 · US
Solid acid alkylation catalyst, and preparation method therefor and use thereof
US-2025262612-A1 · Aug 21, 2025 · US
Top CPC classifications
Most common classification codes for Petrochina Co Ltd in 2025.
| CPC | Patents |
|---|---|
| B01D2258/02 | 2 |
| B01D53/96 | 2 |
| C08F10/14 | 2 |
| C08F110/14 | 2 |
| C08F4/65912 | 2 |
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