Process for purification of helium to very high purity
US-2024409409-A1 · Dec 12, 2024 · US
Helium
Helium · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01B2210/0031 |
| Official title | Helium |
| Display label | Helium |
| Total patents | 65 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 7 |
| 2017 | 8 |
| 2018 | 4 |
| 2019 | 11 |
| 2020 | 5 |
| 2021 | 6 |
| 2022 | 5 |
| 2023 | 5 |
| 2024 | 7 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for producing very high purity helium or hydrogen
US-2024228285-A9 · Jul 11, 2024 · US
Method and arrangement for recovering a helium product from natural gas by membrane unit
US-11986770-B2 · May 21, 2024 · US
Process for producing very high purity helium or hydrogen
US-2024132353-A1 · Apr 25, 2024 · US
Method and system for purification of helium using cryogenic, membrane, and adsorption techniques
US-11952270-B2 · Apr 9, 2024 · US
Cryogenic process for crude helium recovery from natural gas
US-2023391621-A1 · Dec 7, 2023 · US
Helium recovery process
US-2023382735-A1 · Nov 30, 2023 · US
Gas recovering apparatus, semiconductor manufacturing system, and gas recovering method
US-11766635-B2 · Sep 26, 2023 · US
Separation and purification coupled process with high helium yield and diversified products
US-11697092-B2 · Jul 11, 2023 · US
Gas purification method and device
US-2023019514-A1 · Jan 19, 2023 · US
Method and arrangement for recovering helium
US-2022314163-A1 · Oct 6, 2022 · US
Recovery of noncondensable gas components from a gaseous mixture
US-2022205717-A1 · Jun 30, 2022 · US
Helium recovery from gaseous streams
US-11325066-B2 · May 10, 2022 · US
Method and system for purification of helium using cryogenic, membrane, and adsorption techniques
US-2022106190-A1 · Apr 7, 2022 · US
Gas recovering apparatus, semiconductor manufacturing system, and gas recovering method
US-2022072473-A1 · Mar 10, 2022 · US
Separation and purification coupled process with high helium yield and diversified products
US-2021402345-A1 · Dec 30, 2021 · US
Helium purification process and unit
US-2021354987-A1 · Nov 18, 2021 · US
Method and arrangement for recovering a helium product from natural gas by membrane unit
US-2021291110-A1 · Sep 23, 2021 · US
Helium purification process and unit
US-11021366-B2 · Jun 1, 2021 · US
Helium extraction from natural gas
US-10962283-B2 · Mar 30, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B2210/0031?
- CPC C01B2210/0031 is the Cooperative Patent Classification code for “Helium.”
- How many patents are filed under CPC C01B2210/0031 (Helium)?
- Our database includes 65 publications tagged with this CPC code.
- Is patent activity under CPC C01B2210/0031 growing?
- Publication counts under this code: 7 in 2024 vs 3 in 2025 (latest complete years).