Hydrophobic adsorbents and mercury removal processes therewith
US-2017354951-A1 · Dec 14, 2017 · US
Porosity, e.g. pore volume
Porosity, e.g. pore volume · 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 | B01D2253/311 |
| Official title | Porosity, e.g. pore volume |
| Display label | Porosity, e.g. pore volume |
| Total patents | 347 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 27 |
| 2016 | 25 |
| 2017 | 40 |
| 2018 | 26 |
| 2019 | 33 |
| 2020 | 34 |
| 2021 | 31 |
| 2022 | 32 |
| 2023 | 31 |
| 2024 | 21 |
| 2025 | 40 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Carbon porous body, production method thereof, ammonia adsorbent material, canister, and production method thereof
US-2017326527-A1 · Nov 16, 2017 · US
Manufacturing method of honeycomb structure
US-2017282168-A1 · Oct 5, 2017 · US
Alumina-based adsorbent containing sodium and doped with an alkali element for capturing acidic molecules
US-2017225144-A1 · Aug 10, 2017 · US
Adsorptive filter unit having extended useful cycle times and/or an extended service life
US-2017121186-A1 · May 4, 2017 · US
Processes using molecular sieve ssz-105
US-2017106357-A1 · Apr 20, 2017 · US
Performance trapping mass and use thereof in heavy metal trapping
US-9561487-B2 · Feb 7, 2017 · US
Organo-amine acid gas adsorption-desorption polymers, processes for preparing same, and uses thereof
US-9533248-B2 · Jan 3, 2017 · US
Gas storage and dispensing system with monolithic carbon adsorbent
US-9518701-B2 · Dec 13, 2016 · US
Process for recovering natural gas liquids from natural gas produced in remote locations
US-2016340595-A1 · Nov 24, 2016 · US
Method to provide pipeline quality natural gas
US-2016333275-A1 · Nov 17, 2016 · US
Capture mass composed of elemental sulphur deposited on a porous support for capturing heavy metals
US-9486738-B2 · Nov 8, 2016 · US
Silica containing basic sorbent for acid gas removal
US-9475030-B2 · Oct 25, 2016 · US
Microporous organogel absorbing/solubilising materials
US-9475045-B2 · Oct 25, 2016 · US
Methods of applying a sorbent coating on a substrate, a support, and/or a substrate coated with a support
US-9457340-B2 · Oct 4, 2016 · US
Monolithic natural gas storage delivery system based on sorbents
US-9452380-B2 · Sep 27, 2016 · US
Filter materials for treating and purifying gas
US-9440219-B2 · Sep 13, 2016 · US
Porous carbon material composites and their production process, adsorbents, cosmetics, purification agents, and composite photocatalyst materials
US-2016243529-A1 · Aug 25, 2016 · US
Absorbent/solubilizing materials based on microporous organogels
US-9421539-B2 · Aug 23, 2016 · US
Catalytic adsorbents obtained from municipal sludges, industrial sludges, compost and tobacco waste and process for their production
US-2016236146-A1 · Aug 18, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2253/311?
- CPC B01D2253/311 is the Cooperative Patent Classification code for “Porosity, e.g. pore volume.”
- How many patents are filed under CPC B01D2253/311 (Porosity, e.g. pore volume)?
- Our database includes 347 publications tagged with this CPC code.
- Is patent activity under CPC B01D2253/311 growing?
- Publication counts under this code: 21 in 2024 vs 40 in 2025 (latest complete years).