Methods and equipment for cryogenic removal of impurities from oxygen gas
US-2025376373-A1 · Dec 11, 2025 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C01B13/027 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 28 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 6 |
| 2018 | 2 |
| 2019 | 8 |
| 2020 | 1 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Materials, systems, and processes for production of high purity oxygen
US-2025033023-A1 · Jan 30, 2025 · US
Fluid recovery process and apparatus for xenon and or krypton recovery
US-12104850-B2 · Oct 1, 2024 · US
Process for separation of hydrogen and oxygen
US-11850546-B2 · Dec 26, 2023 · US
Mixed gas generating system with oxygen generator or breathing tube
US-2023347094-A1 · Nov 2, 2023 · US
Fluid recovery process and apparatus for xenon and or krypton recovery
US-2022357104-A1 · Nov 10, 2022 · US
Multivariable model predictive controller
US-11442437-B2 · Sep 13, 2022 · US
Process for separation of hydrogen and oxygen
US-2022152548-A1 · May 19, 2022 · US
Methods and apparatus for treating a respiratory disorder
US-2022096780-A1 · Mar 31, 2022 · US
Process for separation of hydrogen and oxygen
US-11285428-B2 · Mar 29, 2022 · US
Process for separation of hydrogen and oxygen
US-2020353403-A1 · Nov 12, 2020 · US
Multivariable model predictive controller
US-2019391571-A1 · Dec 26, 2019 · US
Adsorber with rotary dryer
US-10413859-B2 · Sep 17, 2019 · US
Method for producing oxygen by VPSA
US-10391440-B2 · Aug 27, 2019 · US
Oxygen production process of VSA type with period regeneration
US-10377630-B2 · Aug 13, 2019 · US
Processes using improved RHO adsorbent compositions
US-10343139-B2 · Jul 9, 2019 · US
Pressure swing adsorption for oxygen production
US-10259711-B2 · Apr 16, 2019 · US
Processes using improved rho adsorbent compositions
US-2019091651-A1 · Mar 28, 2019 · US
Oxygen concentration device
US-10188821-B2 · Jan 29, 2019 · US
Oxygen production process of vsa type with period regeneration
US-2018079644-A1 · Mar 22, 2018 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B13/027?
- CPC C01B13/027 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C01B13/027 (Chemistry & Metallurgy)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC C01B13/027 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).