Foot frame bottom plate type fixed parts, sealed inner lining structure, underground chamber and construction method
US-2025092630-A1 · Mar 20, 2025 · US
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Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof (E02D29/10 takes precedence; water-supply or sewerage plants E03; layout of water power plants E02B9/00; making large underground chambers by underground methods only E21D13/00)
Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof (E02D29/10 takes precedence; water-supply or sewerage plants E03; layout of water power plants E02B9/00; making large underground chambers by underground methods only E21D13/00) · Cooperative Patent Classification (CPC)
Building, mining, and civil engineering structures.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | E02D29/04 |
| Official title | {Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof (E02D29/10 takes precedence; water-supply or sewerage plants E03; layout of water power plants E02B9/00; making large underground chambers by underground methods only E21D13/00)} |
| Display label | Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof (E02D29/10 takes precedence; water-supply or sewerage plants E03; layout of water power plants E02B9/00; making large underground chambers by underground methods only E21D13/00) |
| Total patents | 22 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 8 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 4 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Crack-resistant ultra-high performance concrete for underground engineering in water-rich strata, preparation method, and application thereof
US-12252444-B1 · Mar 18, 2025 · US
Local deep excavation and backfilling structural subgrade and its rapid construction method
US-11781280-B2 · Oct 10, 2023 · US
Transportation system
US-11772914-B2 · Oct 3, 2023 · US
Local Deep Excavation and Backfilling Structural Subgrade and Its Rapid Construction Method
US-2023203775-A1 · Jun 29, 2023 · US
Transportation system
US-2022106136-A1 · Apr 7, 2022 · US
Transportation system
US-2021253379-A1 · Aug 19, 2021 · US
Transportation system
US-2019300301-A1 · Oct 3, 2019 · US
Transportation system
US-10370204-B2 · Aug 6, 2019 · US
Prefabricated and flexible earthquake-resistant self-resetting structure associated with a subway station
US-10344445-B2 · Jul 9, 2019 · US
Prefabricated and flexible earthquake-resistant self-resetting structure associated with a subway station
US-2019048554-A1 · Feb 14, 2019 · US
Transportation system
US-10093493-B2 · Oct 9, 2018 · US
Transportation system
US-9718630-B2 · Aug 1, 2017 · US
Transportation system
US-9604798-B2 · Mar 28, 2017 · US
Transportation system
US-9517901-B2 · Dec 13, 2016 · US
Transportation system
US-9511959-B2 · Dec 6, 2016 · US
Transportation system
US-2016229418-A1 · Aug 11, 2016 · US
Transportation system
US-2016229419-A1 · Aug 11, 2016 · US
Transportation system
US-2016229416-A1 · Aug 11, 2016 · US
Transportation system
US-2016229417-A1 · Aug 11, 2016 · US