Method for constructing artificial water-conducting channel through pulse hydraulic fracturing of drainage boreholes in roof aquifer
US-2025354488-A1 · Nov 20, 2025 · US
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by use of highly pressurised liquid
by use of highly pressurised liquid · Cooperative Patent Classification (CPC)
Building, mining, and civil engineering structures.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | E21C45/04 |
| Official title | by use of highly pressurised liquid |
| Display label | by use of highly pressurised liquid |
| Total patents | 3 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2021 | 1 |
| 2022 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.