Oil well optical fiber multi-parameter testing method and apparatus
US-12509985-B2 · Dec 30, 2025 · US
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Petrochina Co Ltd — Fixed Constructions
Petrochina Co Ltd holds 122 patents in Fixed Constructions, with representative filings summarized below.
| Metric | Value |
|---|---|
| Company | Petrochina Co Ltd |
| Technology | Fixed Constructions |
| Patents in slice | 122 |
| Recent patents in slice | 17 |
| First year | 2015 |
| Last year | 2025 |
Representative patents
Notable publications linking Petrochina Co Ltd to Fixed Constructions.
Oil well optical fiber multi-parameter testing method and apparatus
US-12509985-B2 · Dec 30, 2025 · US
Oil well optical fiber multi-parameter testing method and apparatus
US-12509985-B2 · Dec 30, 2025 · US
Oil well optical fiber multi-parameter testing method and apparatus
US-12509985-B2 · Dec 30, 2025 · US
Oil well optical fiber multi-parameter testing method and apparatus
US-12509985-B2 · Dec 30, 2025 · US
Recent filings
Latest patents from Petrochina Co Ltd in Fixed Constructions.
Oil well optical fiber multi-parameter testing method and apparatus
US-12509985-B2 · Dec 30, 2025 · US
Oil well optical fiber multi-parameter testing method and apparatus
US-12509985-B2 · Dec 30, 2025 · US
Oil well optical fiber multi-parameter testing method and apparatus
US-12509985-B2 · Dec 30, 2025 · US
Oil well optical fiber multi-parameter testing method and apparatus
US-12509985-B2 · Dec 30, 2025 · US
Oil well optical fiber multi-parameter testing method and apparatus
US-12509985-B2 · Dec 30, 2025 · US
Related pages
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