Replaceable filter cartridge assembly
US-2025262569-A1 · Aug 21, 2025 · US
Filtering elements contained in an insert body mounted in a filter housing (double casing), e.g. to avoid contamination when removing or replacing the filter element
Filtering elements contained in an insert body mounted in a filter housing (double casing), e.g. to avoid contamination when removing or replacing the filter element · 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 | B01D2201/307 |
| Official title | Filtering elements contained in an insert body mounted in a filter housing (double casing), e.g. to avoid contamination when removing or replacing the filter element |
| Display label | Filtering elements contained in an insert body mounted in a filter housing (double casing), e.g. to avoid contamination when removing or replacing the filter element |
| Total patents | 61 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 6 |
| 2018 | 5 |
| 2019 | 5 |
| 2020 | 7 |
| 2021 | 6 |
| 2022 | 6 |
| 2023 | 5 |
| 2024 | 4 |
| 2025 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filtering apparatus for removing foreign metal substances from a slurry for manufacturing an electrode plate for a battery
US-2025242282-A1 · Jul 31, 2025 · US
Filter module, filter apparatus, and clothes treating apparatus
US-2025188667-A1 · Jun 12, 2025 · US
Water Quality Purification Assembly and Refrigeration Device
US-2025073620-A1 · Mar 6, 2025 · US
Filter element
US-2025058254-A1 · Feb 20, 2025 · US
Filter element
US-2025058253-A1 · Feb 20, 2025 · US
Component for a liquid filter
US-2025050253-A1 · Feb 13, 2025 · US
Replaceable filter cartridge assembly
US-12194395-B1 · Jan 14, 2025 · US
Filter housing that accepts both single open end o-ring and double open end filter elements
US-12030004-B2 · Jul 9, 2024 · US
Filter element with convertible end cap and methods
US-2024207770-A1 · Jun 27, 2024 · US
Filter with inner container arrangement
US-12005380-B2 · Jun 11, 2024 · US
Expansion membrane assembly and filter head in exhaust fluid filter assembly
US-11857901-B2 · Jan 2, 2024 · US
Intermediate cover of a filter housing of a filter for purifying liquid fluids and filter insert, filter and use
US-11839843-B2 · Dec 12, 2023 · US
Fluid purification device
US-11806647-B2 · Nov 7, 2023 · US
Filter with inner container arrangement
US-2023182047-A1 · Jun 15, 2023 · US
Filter cover protection against external contamination
US-11638889-B2 · May 2, 2023 · US
Filter with inner container arrangement
US-11602706-B2 · Mar 14, 2023 · US
External water-purifying filter case, installation structure thereof and sterilizing method using the same
US-11530869-B2 · Dec 20, 2022 · US
Process to make a ceramic filter for metal casting
US-2022355232-A1 · Nov 10, 2022 · US
Water purifying filter
US-11400395-B2 · Aug 2, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2201/307?
- CPC B01D2201/307 is the Cooperative Patent Classification code for “Filtering elements contained in an insert body mounted in a filter housing (double casing), e.g. to avoid contamination when removing or replacing the filter element.”
- How many patents are filed under CPC B01D2201/307 (Filtering elements contained in an insert body mounted in a filter housing (double casing), e.g. to avoid contamination when removing or replacing the filter element)?
- Our database includes 61 publications tagged with this CPC code.
- Is patent activity under CPC B01D2201/307 growing?
- Publication counts under this code: 4 in 2024 vs 9 in 2025 (latest complete years).