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 | C01B13/0266 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 10 |
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 |
| 2019 | 1 |
| 2020 | 3 |
| 2022 | 2 |
| 2023 | 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
Process for separation of hydrogen and oxygen
US-11850546-B2 · Dec 26, 2023 · US
Process for separation of hydrogen and oxygen
US-2022152548-A1 · May 19, 2022 · US
Process for separation of hydrogen and oxygen
US-11285428-B2 · Mar 29, 2022 · US
Carbon molecular sieve adsorbent
US-10835856-B2 · Nov 17, 2020 · US
Process for separation of hydrogen and oxygen
US-2020353403-A1 · Nov 12, 2020 · US
Improved Carbon Molecular Sieve Adsorbent
US-2020054986-A1 · Feb 20, 2020 · US
Adsorber with rotary dryer
US-10413859-B2 · Sep 17, 2019 · US
Carbon molecular sieve membrane (CMSM) performance tuning by dual temperature secondary oxygen doping (DTSOD)
US-8999037-B2 · Apr 7, 2015 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B13/0266?
- CPC C01B13/0266 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C01B13/0266 (Chemistry & Metallurgy)?
- Our database includes 10 publications tagged with this CPC code.
- Is patent activity under CPC C01B13/0266 growing?
- Publication counts under this code: 1 in 2023 vs 2 in 2025 (latest complete years).