Pressure-preserved coring tool, use method, and reservoir analysis method
US-2026078647-A1 · Mar 19, 2026 · US
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China Nat Petroleum Corp — Fixed Constructions
China Nat Petroleum Corp holds 99 patents in Fixed Constructions, with representative filings summarized below.
| Metric | Value |
|---|---|
| Company | China Nat Petroleum Corp |
| Technology | Fixed Constructions |
| Patents in slice | 99 |
| Recent patents in slice | 65 |
| First year | 2015 |
| Last year | 2026 |
Representative patents
Notable publications linking China Nat Petroleum Corp to Fixed Constructions.
Pressure-preserved coring tool, use method, and reservoir analysis method
US-2026078647-A1 · Mar 19, 2026 · US
Boronized corrosion resistant alloy component for high pressure and high temperature oilfield applications
US-12467123-B2 · Nov 11, 2025 · US
Boronized corrosion resistant alloy component for high pressure and high temperature oilfield applications
US-12467123-B2 · Nov 11, 2025 · US
Toe flap valve for internal corrosion prevention in ccus injection well tubing
US-2025327371-A1 · Oct 23, 2025 · US
Recent filings
Latest patents from China Nat Petroleum Corp in Fixed Constructions.
Pressure-preserved coring tool, use method, and reservoir analysis method
US-2026078647-A1 · Mar 19, 2026 · US
Pressure-preserved coring tool, use method, and reservoir analysis method
US-2026078647-A1 · Mar 19, 2026 · US
Boronized corrosion resistant alloy component for high pressure and high temperature oilfield applications
US-12467123-B2 · Nov 11, 2025 · US
Boronized corrosion resistant alloy component for high pressure and high temperature oilfield applications
US-12467123-B2 · Nov 11, 2025 · US
Toe flap valve for internal corrosion prevention in ccus injection well tubing
US-2025327371-A1 · Oct 23, 2025 · US
Related pages
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