Crude Oil Dehydration and Desalting Patents: Leaders, Trends 2026
Crude Oil Dehydration and Desalting Patents
A single leader, then a steep drop-off. the top-ranked assignee holds 12 records against a fifth-place holder of just 1, across only 8 ranked companies in this dataset. Activity rose to a peak of 6 records in 2021, then fell to 0 by 2024 — the last year that can be read as complete. 2025 and 2026 are still filling in as publication catches up with filing, so read the tail as incomplete rather than as a decline.
- 1國家坦克公司12
- 2沙特阿拉伯石油公司11
- 3埃克森美孚科技工程公司6
- 4印度孟买技术研究院2
- 5沙特阿美服务公司1
See the full crude oil dehydration and desalting analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions on crude oil dehydration and desalting patents
Who holds the most patents in crude oil dehydration and desalting?
One assignee leads the ranked list with 12 records, well ahead of the rest of the 8 companies that appear in this dataset’s ranking, where fifth place holds only 1. That gap indicates a single company built an early, broad position in coalescer and demulsifier process claims rather than the field being evenly contested. It does not mean the company controls the whole technology area, since the ranking only reflects the 34 records matched by this specific search.
Is patent filing activity in this field growing or shrinking?
Filing peaked at 6 records in 2021 and fell to 0 by 2024, a complete-year comparison that shows a real slowdown from the peak. However, 2025 and 2026 figures are not yet reliable because patent publication typically lags filing by about 18 months, so recent-looking gaps will partly fill in as more records publish. Treat the 2021-to-2024 drop as the dependable read, not the apparent flatness after it.
What technology areas are most heavily claimed in this space?
C10G (hydrocarbon oils and refining) and B01D (separation processes) dominate, covering 85.3% and 73.5% of the 34 records respectively. Chemical and physical processing under B01J appears in 32.4% of records, and water treatment under C02F in 20.6%. Because records can carry multiple IPC classes, these figures overlap and add to more than 100%, but the pattern is clear: the mechanical separation and refining core is dense, while control and measurement classes are comparatively open.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Crude Oil Dehydration and Desalting covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.