System and method for concentrating gas
US-12427474-B2 · Sep 30, 2025 · US
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characterised by the cross-sectional shape of the tube
characterised by the cross-sectional shape of the tube · 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 | B01D69/046 |
| Official title | {characterised by the cross-sectional shape of the tube} |
| Display label | characterised by the cross-sectional shape of the tube |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sintered porous body with multiple layers
US-12409421-B2 · Sep 9, 2025 · US
Systems and methods for concentrating gas
US-12226733-B2 · Feb 18, 2025 · US
Porous sintered membranes and methods of preparing porous sintered membranes
US-11752471-B2 · Sep 12, 2023 · US
Ceramic flat membrane
US-2023271143-A1 · Aug 31, 2023 · US
Method for manufacturing zeolite membrane structure
US-11559771-B2 · Jan 24, 2023 · US
Sintered porous body with multiple layers
US-2022410079-A1 · Dec 29, 2022 · US
System and Method for Concentrating Gas
US-2022016569-A1 · Jan 20, 2022 · US
Systems and Methods for Concentrating Gas
US-2022016566-A1 · Jan 20, 2022 · US
System and Method for Concentrating Gas
US-2022016564-A1 · Jan 20, 2022 · US
Porous sintered membranes and methods of preparing porous sintered membranes
US-2021016347-A1 · Jan 21, 2021 · US
Method for manufacturing zeolite membrane structure
US-2020009510-A1 · Jan 9, 2020 · US
Tangential filter with a supporting element including a set of channels
US-10245561-B2 · Apr 2, 2019 · US
Water treatment process using pyrophylite ceramic membrane
US-2018086653-A1 · Mar 29, 2018 · US
Axial transfer line shell side degassing
US-9700816-B2 · Jul 11, 2017 · US
Axial Transfer Line Shell Side Degassing
US-2016114264-A1 · Apr 28, 2016 · US
Drying substances, preparation and use thereof
US-2015283519-A1 · Oct 8, 2015 · US
Drying substances, preparation and use thereof
US-9090766-B2 · Jul 28, 2015 · US