Gas separation method
US-2026027515-A1 · Jan 29, 2026 · US
Halogens or halogen compounds
Halogens or halogen compounds · 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 | B01D2256/26 |
| Official title | Halogens or halogen compounds |
| Display label | Halogens or halogen compounds |
| Total patents | 62 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 11 |
| 2017 | 8 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 4 |
| 2022 | 6 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 8 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for separating gas
US-2026027513-A1 · Jan 29, 2026 · US
Molding catalyst for hydrogen chloride oxidation reaction, and method for producing same
US-12472486-B2 · Nov 18, 2025 · US
Halon purification method
US-12459880-B2 · Nov 4, 2025 · US
Chemical separation for fluorine recirculation
US-2025325940-A1 · Oct 23, 2025 · US
Hydrogen chloride dehydration method
US-12404172-B2 · Sep 2, 2025 · US
A process for the purification of fluorinated olefins in gas phase
US-2025269315-A1 · Aug 28, 2025 · US
Method for producing bromine pentafluoride
US-12391550-B2 · Aug 19, 2025 · US
Method for producing fluorine gas
US-12358796-B2 · Jul 15, 2025 · US
Method for the separation of phosphorus pentafluoride from hydrogen chloride
US-2025065259-A1 · Feb 27, 2025 · US
Service system for gas compartments
US-12157088-B2 · Dec 3, 2024 · US
Method of separating phosgene and hydrogen chloride
US-2024300817-A1 · Sep 12, 2024 · US
Selective adsorption of halocarbon impurities containing cl, br and i in fluorocarbons or hydrofluorocarbons using adsorbent supported metal oxide
US-12083493-B2 · Sep 10, 2024 · US
Hydrogen fluoride gas removal device and method for removing hydrogen fluoride gas
US-2024157284-A1 · May 16, 2024 · US
Halon purification method
US-2023322650-A1 · Oct 12, 2023 · US
Boron oxide-containing adsorbent and related methods and devices
US-2023126756-A1 · Apr 27, 2023 · US
Molding catalyst for hydrogen chloride oxidation reaction, and method for producing same
US-2023072554-A1 · Mar 9, 2023 · US
Hydrogen chloride dehydration method
US-2022371886-A1 · Nov 24, 2022 · US
Selective adsorption of halocarbon impurities containing cl, br and i in fluorocarbons or hydrofluorocarbons using adsorbent supported metal oxide
US-2022280908-A1 · Sep 8, 2022 · US
Method for producing fluorine gas
US-2022234890-A1 · Jul 28, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2256/26?
- CPC B01D2256/26 is the Cooperative Patent Classification code for “Halogens or halogen compounds.”
- How many patents are filed under CPC B01D2256/26 (Halogens or halogen compounds)?
- Our database includes 62 publications tagged with this CPC code.
- Is patent activity under CPC B01D2256/26 growing?
- Publication counts under this code: 4 in 2024 vs 8 in 2025 (latest complete years).