Impurity acquisition method and impurity acquisition apparatus for acquiring metal impurities in organic solvents
US-2026014494-A1 · Jan 15, 2026 · US
containing anionic exchangers
containing anionic exchangers · 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 | B01J49/07 |
| Official title | containing anionic exchangers |
| Display label | containing anionic exchangers |
| Total patents | 51 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 5 |
| 2019 | 3 |
| 2020 | 7 |
| 2021 | 7 |
| 2022 | 6 |
| 2023 | 5 |
| 2024 | 4 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Separation media, devices and applications thereof
US-12434232-B2 · Oct 7, 2025 · US
Device and method for passive collection of atmospheric carbon dioxide with a double-walled harvest chamber
US-2025229222-A1 · Jul 17, 2025 · US
Multi-dimension, multi-mode chromatography methods for producing high purity, high yield lithium, cobalt, nickel, and manganese salts from waste lithium-ion batteries and other feedstocks
US-2025219178-A1 · Jul 3, 2025 · US
Separation media, devices and applications thereof
US-2025050324-A1 · Feb 13, 2025 · US
Resin production method, ultrapure water production method, and ultrapure water production apparatus
US-2024382940-A1 · Nov 21, 2024 · US
Separation media, devices and applications thereof
US-12128394-B2 · Oct 29, 2024 · US
Weak base anion resin polymers comprising alkylamine segments and cross-linking segments, and their methods of use in ion exchange
US-2024150511-A1 · May 9, 2024 · US
Water softening device, recycling method for water softening device, and method for cleaning water softening device
US-2024002263-A1 · Jan 4, 2024 · US
Process for removing cyanide from a cyanide-bearing aqueous fluid
US-2023399241-A1 · Dec 14, 2023 · US
Component addition polymerization
US-11760661-B2 · Sep 19, 2023 · US
Process for removal of nitrate and perchlorate from fluid
US-2023278895-A1 · Sep 7, 2023 · US
Weak ion exchange particulate medium prepared from phenol-containing organic matter for anions contained in aqueous solutions
US-11684912-B2 · Jun 27, 2023 · US
Zirconium oxide module conditioning
US-11642654-B2 · May 9, 2023 · US
Aqueous hydrogen peroxide purification method and purification system
US-11524896-B2 · Dec 13, 2022 · US
Method for Desorbing Carbon Dioxide from Polymeric Organic Anion Exchangers
US-2022339619-A1 · Oct 27, 2022 · US
Method for regeneration of an overload chromatography column
US-2022203347-A1 · Jun 30, 2022 · US
Organic polymer compositions for removal of oxoanions from aqueous solutions
US-11369944-B2 · Jun 28, 2022 · US
Process for reducing the amount of carbon disulphide (CS2) in a hydrocarbon feed
US-11299681-B2 · Apr 12, 2022 · US
Method for identifying the unit causing a raw water leak in a condenser of a thermal power plant
US-11227698-B2 · Jan 18, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J49/07?
- CPC B01J49/07 is the Cooperative Patent Classification code for “containing anionic exchangers.”
- How many patents are filed under CPC B01J49/07 (containing anionic exchangers)?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC B01J49/07 growing?
- Publication counts under this code: 4 in 2024 vs 4 in 2025 (latest complete years).