Magnetic aluminum-based adsorbent and preparation method therefor
US-2024342688-A1 · Oct 17, 2024 · US
Washing or leaching
Washing or leaching · 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 | B01J20/3071 |
| Official title | {Washing or leaching} |
| Display label | Washing or leaching |
| Total patents | 409 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 19 |
| 2017 | 26 |
| 2018 | 34 |
| 2019 | 35 |
| 2020 | 38 |
| 2021 | 37 |
| 2022 | 38 |
| 2023 | 48 |
| 2024 | 53 |
| 2025 | 54 |
| 2026 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of making nanocomposite from date palm tree and saudi bentonite
US-2024261760-A1 · Aug 8, 2024 · US
Charge reversible ion exchange resins, chromatography column, method, and system thereof
US-2017363592-A1 · Dec 21, 2017 · US
Method for removal of sulfur-based gas
US-9833735-B2 · Dec 5, 2017 · US
High charge density metallophosphate molecular sieves
US-2017341066-A1 · Nov 30, 2017 · US
High charge density metallophosphate molecular sieves
US-2017341064-A1 · Nov 30, 2017 · US
Deodorant, deodorant composition, and deodorizing product
US-2017333588-A1 · Nov 23, 2017 · US
Carbon porous body, production method thereof, ammonia adsorbent material, canister, and production method thereof
US-2017326527-A1 · Nov 16, 2017 · US
Superabsorbent polymeric structures
US-2017326529-A1 · Nov 16, 2017 · US
Cerium oxide particles and method for production thereof
US-2017313594-A1 · Nov 2, 2017 · US
Zeolite-based adsorbents based on lsx zeolite of controlled outer surface area, process for preparing them and uses thereof
US-2017304800-A1 · Oct 26, 2017 · US
Zeolite-based adsorbents based on zeolite x with a low binder content and a low outer surface area, process for preparing them and uses thereof
US-2017304799-A1 · Oct 26, 2017 · US
Adsorption method, adsorption separation method, and drug delivery carrier
US-9795896-B2 · Oct 24, 2017 · US
Method for forming an acid-treated fly ash activated carbon
US-9757709-B1 · Sep 12, 2017 · US
Fabrication of metal organic framework materials using a layer-by-layer spin coating approach
US-2017246615-A1 · Aug 31, 2017 · US
Modified activated carbon preparation and methods thereof
US-9737872-B2 · Aug 22, 2017 · US
Zeolite adsorbents comprising zeolite EMT, process for preparing the same and uses thereof
US-9707539-B2 · Jul 18, 2017 · US
Manganese Oxide Nanoarchitectures for Broad-Spectrum Removal of Toxic Gases in Air-Filtration Applications
US-2017197197-A1 · Jul 13, 2017 · US
Radionuclide adsorbent, method of producing radionuclide adsorbent and production apparatus thereof
US-9682360-B2 · Jun 20, 2017 · US
Materials for removal of toxins in sorbent dialysis and methods and systems using same
US-9682184-B2 · Jun 20, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J20/3071?
- CPC B01J20/3071 is the Cooperative Patent Classification code for “Washing or leaching.”
- How many patents are filed under CPC B01J20/3071 (Washing or leaching)?
- Our database includes 409 publications tagged with this CPC code.
- Is patent activity under CPC B01J20/3071 growing?
- Publication counts under this code: 53 in 2024 vs 54 in 2025 (latest complete years).