Purification system for nitrogen gas and xenon gas in water and isotope static analysis method thereof
US-12566154-B2 · Mar 3, 2026 · US
Physical processing only
Physical processing only · 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 | C01B23/0036 |
| Official title | {Physical processing only} |
| Display label | Physical processing only |
| Total patents | 30 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2018 | 6 |
| 2020 | 6 |
| 2021 | 6 |
| 2022 | 1 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of recycling helium from waste gas in semiconductor process
US-2025122079-A1 · Apr 17, 2025 · US
Argon column for air separation unit and air separation unit
US-2025085050-A1 · Mar 13, 2025 · US
Process and Apparatus for Xenon and or Krypton Recovery
US-2024375958-A1 · Nov 14, 2024 · US
Process for producing very high purity helium or hydrogen
US-2024228285-A9 · Jul 11, 2024 · US
Process for producing very high purity helium or hydrogen
US-2024132353-A1 · Apr 25, 2024 · US
Identifying Repetitive Portions of Clinical Notes and Generating Summaries Pertinent to Treatment of a Patient Based on the Identified Repetitive Portions
US-2024053307-A1 · Feb 15, 2024 · US
Cryogenic process for crude helium recovery from natural gas
US-2023391621-A1 · Dec 7, 2023 · US
Purification System for Nitrogen Gas and Xenon Gas in Water and Isotope Static Analysis Method Thereof
US-2023068184-A1 · Mar 2, 2023 · US
Hyperpolarized noble gas production systems with nanocluster suppression, detection and/or filtering and related methods and devices
US-11547766-B2 · Jan 10, 2023 · US
Recovery of krypton and xenon from liquid oxygen
US-11460246-B2 · Oct 4, 2022 · US
Helium purification process and unit
US-2021354987-A1 · Nov 18, 2021 · US
Hyperpolarized noble gas production systems with nanocluster suppression, detection and/or filtering and related methods and devices
US-2021290780-A1 · Sep 23, 2021 · US
Process for argon and nitrogen production
US-11104576-B2 · Aug 31, 2021 · US
Hyperpolarized noble gas production systems with nanocluster suppression, detection and/or filtering and related methods and devices
US-11052161-B2 · Jul 6, 2021 · US
Recovery of Krypton and Xenon from Liquid Oxygen
US-2021190422-A1 · Jun 24, 2021 · US
Helium purification process and unit
US-11021366-B2 · Jun 1, 2021 · US
Helium purification process and unit
US-2020385269-A1 · Dec 10, 2020 · US
Device and method for purifying a gas mixture
US-10767923-B2 · Sep 8, 2020 · US
Process for argon and nitrogen production
US-2020165131-A1 · May 28, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B23/0036?
- CPC C01B23/0036 is the Cooperative Patent Classification code for “Physical processing only.”
- How many patents are filed under CPC C01B23/0036 (Physical processing only)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC C01B23/0036 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).