System and method for biological methane gas generation and removal of carbon dioxide therefrom
US-12415976-B2 · Sep 16, 2025 · US
Specific features relating to the ion-exchange material
Specific features relating to the ion-exchange material · 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 | B01D61/485 |
| Official title | {Specific features relating to the ion-exchange material} |
| Display label | Specific features relating to the ion-exchange material |
| Total patents | 63 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 6 |
| 2017 | 10 |
| 2018 | 6 |
| 2019 | 5 |
| 2020 | 4 |
| 2021 | 7 |
| 2022 | 1 |
| 2023 | 6 |
| 2024 | 5 |
| 2025 | 4 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electrodeionization device and method for producing pure water
US-2025282657-A1 · Sep 11, 2025 · US
Multi-stage bipolar electrodialysis system for high concentration acid or base production
US-12257551-B2 · Mar 25, 2025 · US
Electrokinetic-based concentrator device and method
US-12181393-B2 · Dec 31, 2024 · US
Desalination device
US-2024294408-A1 · Sep 5, 2024 · US
Water treatment method and water treatment apparatus
US-2024239695-A1 · Jul 18, 2024 · US
Electrodeionization system and control method for electrodeionization system
US-2024182330-A1 · Jun 6, 2024 · US
Ion permeable membrane
US-11975292-B2 · May 7, 2024 · US
Electrodeionization Configuration for Enhanced Boron Removal
US-2023406734-A1 · Dec 21, 2023 · US
Voltage-controlled anion exchange membrane enabling selective ion affinities for water desalination and device containing the same
US-11820681-B2 · Nov 21, 2023 · US
Improved chlorine tolerance of continuous electrodeionization modules
US-2023149857-A1 · May 18, 2023 · US
Direct Production Of Lithium Hydroxide From Brine By Electrochemical Flow Cells
US-2023067397-A1 · Mar 2, 2023 · US
Water softening intercalation systems
US-2023059547-A1 · Feb 23, 2023 · US
Electrochemical sensor
US-11567030-B2 · Jan 31, 2023 · US
System and method for biological methane gas generation and removal of carbon dioxide therefrom
US-2022204899-A1 · Jun 30, 2022 · US
Electrokinetic-Based Concentrator Device and Method
US-2021346844-A1 · Nov 11, 2021 · US
Acidic treatment liquid processing apparatus and acidic treatment liquid processing method
US-2021339198-A1 · Nov 4, 2021 · US
Acidic treatment liquid processing apparatus, acidic treatment liquid processing method, surface treatment system, and surface treatment method
US-2021339199-A1 · Nov 4, 2021 · US
Ion permeable membrane
US-2021077953-A1 · Mar 18, 2021 · US
Bipolar electrodialysis methods and systems
US-10946341-B2 · Mar 16, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D61/485?
- CPC B01D61/485 is the Cooperative Patent Classification code for “Specific features relating to the ion-exchange material.”
- How many patents are filed under CPC B01D61/485 (Specific features relating to the ion-exchange material)?
- Our database includes 63 publications tagged with this CPC code.
- Is patent activity under CPC B01D61/485 growing?
- Publication counts under this code: 5 in 2024 vs 4 in 2025 (latest complete years).