Production method for high-purity hydrogen chloride gas
US-2022411265-A1 · Dec 29, 2022 · US
Chlorine
Chlorine · 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 | B01D2257/2025 |
| Official title | Chlorine |
| Display label | Chlorine |
| Total patents | 93 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 8 |
| 2017 | 3 |
| 2018 | 8 |
| 2019 | 10 |
| 2020 | 10 |
| 2021 | 6 |
| 2022 | 17 |
| 2023 | 9 |
| 2024 | 12 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pyrolysis method and system for recycled waste
US-2022396735-A1 · Dec 15, 2022 · US
Metal-organic framework/polymer foam composite materials and their uses in decontamination and/or ballistic protection
US-11524266-B1 · Dec 13, 2022 · US
Mxenes for selective adsorption of desired chemical analytes and method thereof
US-2022274087-A1 · Sep 1, 2022 · US
Regeneration vessel adsorption zone and process for adsorbing halogen-containing material and sampling catalyst
US-2022203319-A1 · Jun 30, 2022 · US
Exhaust gas processing system including adsorbent for suppressing powder-like byproduct
US-2022203290-A1 · Jun 30, 2022 · US
Electro oxidation membrane evaporator
US-11365137-B2 · Jun 21, 2022 · US
Counterflow air contactor for mass transfer
US-2022184553-A1 · Jun 16, 2022 · US
Composites for extraction of metal or contaminating chemical species
US-2022168706-A1 · Jun 2, 2022 · US
Composite material, its manufacture and use in gas purification
US-11247190-B2 · Feb 15, 2022 · US
Propane/butane dehydrogenation complex with thermal oxidation system
US-2022041529-A1 · Feb 10, 2022 · US
Cumene-phenol complex with thermal oxidation system
US-2022041534-A1 · Feb 10, 2022 · US
Renewable transportation fuel process with thermal oxidation sysem
US-2022033722-A1 · Feb 3, 2022 · US
Methods and compositions for scrubbing chlorine-containing gases
US-2021252455-A1 · Aug 19, 2021 · US
Healthy gas generating system
US-2021138179-A1 · May 13, 2021 · US
Storage medium and method for separating, storing and transporting chlorine from chlorine-containing gases
US-2021087057-A1 · Mar 25, 2021 · US
Method for the removal of oxygen from an industrial gas feed
US-10933372-B2 · Mar 2, 2021 · US
Healthy gas generating system
US-10926055-B2 · Feb 23, 2021 · US
Purification of hydrogen
US-10882744-B2 · Jan 5, 2021 · US
Electro Oxidation Membrane Evaporator
US-2020354240-A1 · Nov 12, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2257/2025?
- CPC B01D2257/2025 is the Cooperative Patent Classification code for “Chlorine.”
- How many patents are filed under CPC B01D2257/2025 (Chlorine)?
- Our database includes 93 publications tagged with this CPC code.
- Is patent activity under CPC B01D2257/2025 growing?
- Publication counts under this code: 12 in 2024 vs 7 in 2025 (latest complete years).