Method of producing carbon molecular sieve membranes
US-12472482-B2 · Nov 18, 2025 · US
with molecular sieve properties
with molecular sieve properties · 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 | C01B32/306 |
| Official title | with molecular sieve properties |
| Display label | with molecular sieve properties |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 5 |
| 2017 | 10 |
| 2018 | 4 |
| 2019 | 11 |
| 2020 | 4 |
| 2021 | 7 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Activated carbon
US-12258284-B2 · Mar 25, 2025 · US
Gas treatment method and gas treatment device
US-12121847-B2 · Oct 22, 2024 · US
Activated carbon
US-11873235-B2 · Jan 16, 2024 · US
Activated carbon for adsorbing neutral per- and polyfluoroalkyl compounds and analysis method for neutral per- and polyfluoroalkyl compounds in water sample
US-2023372893-A1 · Nov 23, 2023 · US
Activated carbon fiber sheet for motor vehicle canister
US-11807525-B2 · Nov 7, 2023 · US
Method of producing carbon molecular sieve membranes
US-2023278006-A1 · Sep 7, 2023 · US
Reactive inhibition of pore structure collapse during pyrolytic formation of carbon molecular sieves
US-11660575-B2 · May 30, 2023 · US
Carbonaceous material and method for producing same
US-11634330-B2 · Apr 25, 2023 · US
Porous carbon material, method for producing same, and synthesis reaction catalyst
US-11504697-B2 · Nov 22, 2022 · US
Carbon catalyst, electrode, and battery
US-11398629-B2 · Jul 26, 2022 · US
Method for producing porous carbon material
US-11377358-B2 · Jul 5, 2022 · US
Gas treatment method and gas treatment device
US-2022193597-A1 · Jun 23, 2022 · US
Porous Carbon Material, Method for Manufacturing Same, Filter, Sheet, and Catalyst Carrier
US-2021347642-A1 · Nov 11, 2021 · US
Activated carbon
US-2021261442-A1 · Aug 26, 2021 · US
Activated carbon
US-2021261441-A1 · Aug 26, 2021 · US
Porous carbon material, method for producing same, and use of same
US-11065603-B2 · Jul 20, 2021 · US
Activated carbon fiber sheet for motor vehicle canister
US-2021198111-A1 · Jul 1, 2021 · US
Carbonaceous material, carbonaceous material-containing electrode material for electric double layer capacitor, electrode for electric double layer capacitor, and electric double layer capacitor
US-10984963-B2 · Apr 20, 2021 · US
Porous carbon material, method for producing same, and use of same
US-2021046452-A1 · Feb 18, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B32/306?
- CPC C01B32/306 is the Cooperative Patent Classification code for “with molecular sieve properties.”
- How many patents are filed under CPC C01B32/306 (with molecular sieve properties)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC C01B32/306 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).