Control method and system of front-end conveying device for soil leaching remediation
US-2026048425-A1 · Feb 19, 2026 · US
Extraction using liquids, e.g. washing, leaching {, flotation}
Extraction using liquids, e.g. washing, leaching {, flotation} · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B09C1/02 |
| Official title | Extraction using liquids, e.g. washing, leaching {, flotation} |
| Display label | Extraction using liquids, e.g. washing, leaching {, flotation} |
| Total patents | 42 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 10 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Geopolymer precursor preparation
US-2026015288-A1 · Jan 15, 2026 · US
Method for extracting a metal ion from an earth material
US-2026014493-A1 · Jan 15, 2026 · US
Washing and desalinating system for sand soil in river mouth blowing-sand reclaimed land before planting greenery
US-12492523-B2 · Dec 9, 2025 · US
Method for irrigating a porous substrate using a foam, and the uses thereof
US-2025270669-A1 · Aug 28, 2025 · US
Washing and desalinating system for sand soil in river mouth blowing-sand reclaimed land before planting greenery
US-2024342629-A1 · Oct 17, 2024 · US
Method to remediate contaminated soil
US-12005486-B2 · Jun 11, 2024 · US
Porous glass-based microbial storage and delivery system
US-2024002787-A1 · Jan 4, 2024 · US
Sand cleaning and disposal system and method
US-11819784-B2 · Nov 21, 2023 · US
Electrokinetic-aeration-liquid injection combined remediation method for compound contaminated soil containing heavy metals and organic substances
US-11759836-B2 · Sep 19, 2023 · US
System for accelerating salt leaching and drainage of soil based on negative pressure
US-2023256487-A1 · Aug 17, 2023 · US
Method to remediate contaminated soil
US-2023219124-A1 · Jul 13, 2023 · US
Release agent for improved removal of valuable material from the surface of an engineered collection media
US-2022410175-A1 · Dec 29, 2022 · US
Remediation of heavy metal contaminated soil by asymmetrical alternating current electrochemistry
US-11517950-B2 · Dec 6, 2022 · US
Electrokinetic-aeration-liquid injection combined remediation method for compound contaminated soil containing heavy metals and organic substances
US-2022176428-A1 · Jun 9, 2022 · US
Remediation system and method based on pollution obstruction for underground water with DNAPL pollutant
US-11203538-B2 · Dec 21, 2021 · US
Method and system for the remediation of contaminated earth from hazardous substances in a batch-wise ex-situ on-site manner
US-11040383-B2 · Jun 22, 2021 · US
Sand cleaning and disposal system and method
US-2021146280-A1 · May 20, 2021 · US
Remediation of heavy metal contaminated soil by asymmetrical alternating current electrochemistry
US-2020324326-A1 · Oct 15, 2020 · US
Sand/water remediation method with a photocatalytic fuel cell
US-10717120-B2 · Jul 21, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B09C1/02?
- CPC B09C1/02 is the Cooperative Patent Classification code for “Extraction using liquids, e.g. washing, leaching {, flotation}.”
- How many patents are filed under CPC B09C1/02 (Extraction using liquids, e.g. washing, leaching {, flotation})?
- Our database includes 42 publications tagged with this CPC code.
- Is patent activity under CPC B09C1/02 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).