Graded underground pumped-storage hydropower in coal mine, construction and using methods
US-2026071604-A1 · Mar 12, 2026 · US
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at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench · Cooperative Patent Classification (CPC)
Building, mining, and civil engineering structures.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | E02D29/05 |
| Official title | at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench |
| Display label | at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench |
| Total patents | 11 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2019 | 1 |
| 2021 | 3 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Venting system and venting method
US-2025162793-A1 · May 22, 2025 · US
Ground shaft including side walls configured to provide enhanced load-bearing capacity
US-2024376681-A1 · Nov 14, 2024 · US
Local deep excavation and backfilling structural subgrade and its rapid construction method
US-11781280-B2 · Oct 10, 2023 · US
Local Deep Excavation and Backfilling Structural Subgrade and Its Rapid Construction Method
US-2023203775-A1 · Jun 29, 2023 · US
Structural engineering dominated geotechnical structured permanent supporting system and design method
US-2023099182-A1 · Mar 30, 2023 · US
Well cellar excavating device and method
US-11066887-B2 · Jul 20, 2021 · US
Structure material, structure, method for manufacturing structure, seal structural material, structure, method of constructing structure, composition for sealing, and ion supplying material
US-2021171410-A1 · Jun 10, 2021 · US
Well Cellar Excavating Device And Method
US-2021062602-A1 · Mar 4, 2021 · US
Method and facility for manufacturing a continuous wall in the ground
US-10280585-B2 · May 7, 2019 · US
Method and facility for manufacturing a continuous wall in the ground
US-2016145825-A1 · May 26, 2016 · US