Gas separation device with nanocomposite membrane
US-2017348633-A1 · Dec 7, 2017 · US
Noble gases
Noble gases · 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 | B01D2256/18 |
| Official title | Noble gases |
| Display label | Noble gases |
| Total patents | 235 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 20 |
| 2017 | 32 |
| 2018 | 26 |
| 2019 | 26 |
| 2020 | 30 |
| 2021 | 16 |
| 2022 | 21 |
| 2023 | 19 |
| 2024 | 17 |
| 2025 | 16 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Gas separation device with nanocomposite membrane
US-9815019-B1 · Nov 14, 2017 · US
Combined membrane-pressure swing adsorption method for recovery of helium
US-2017320736-A1 · Nov 9, 2017 · US
Systems and methods for recovering helium from feed streams containing carbon dioxide
US-9791210-B2 · Oct 17, 2017 · US
Gas separation method
US-2017282118-A1 · Oct 5, 2017 · US
Gas separation method
US-2017282117-A1 · Oct 5, 2017 · US
Si—Y nanocomposite membrane and methods of making and use thereof
US-9770688-B2 · Sep 26, 2017 · US
Argon production method and apparatus
US-9759482-B2 · Sep 12, 2017 · US
Modified Chabazite Adsorbent Compositions, Methods of Making and Using Them
US-2017239641-A1 · Aug 24, 2017 · US
Aluminum oxide supported gas permeable membranes
US-2017239624-A1 · Aug 24, 2017 · US
Modified Chabazite Adsorbent Compositions, Methods of Making and Using them
US-2017239640-A1 · Aug 24, 2017 · US
Method for argon production via cold pressure swing adsorption
US-9708188-B1 · Jul 18, 2017 · US
Anti-surge speed control
US-9702365-B2 · Jul 11, 2017 · US
Sour gas feed separations and helium recovery from natural gas using block co-polyimide membranes
US-2017189850-A1 · Jul 6, 2017 · US
O-hydroxy-functionalized diamines, polyimides, methods of making each, and methods of use
US-2017190842-A1 · Jul 6, 2017 · US
Separation and storage of fluids using ITQ-55
US-9695056-B2 · Jul 4, 2017 · US
Separation and storage of fluids using ITQ-55
US-9688542-B2 · Jun 27, 2017 · US
Membranes for gas separation synthesized from polyimides containing 4-fluoro-4′,4″-diaminotriphenylmethane
US-9675941-B2 · Jun 13, 2017 · US
Helium enhanced heat transfer in adsorptive liquid or gas phase argon purification processes
US-9676629-B2 · Jun 13, 2017 · US
Integrated process and apparatus for recovery of helium rich streams
US-9676628-B2 · Jun 13, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2256/18?
- CPC B01D2256/18 is the Cooperative Patent Classification code for “Noble gases.”
- How many patents are filed under CPC B01D2256/18 (Noble gases)?
- Our database includes 235 publications tagged with this CPC code.
- Is patent activity under CPC B01D2256/18 growing?
- Publication counts under this code: 17 in 2024 vs 16 in 2025 (latest complete years).