Replaceable filter cartridge assembly
US-2025262569-A1 · Aug 21, 2025 · US
Constructions of two or more housings (B01D35/12 takes precedence)
Constructions of two or more housings (B01D35/12 takes precedence) · 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 | B01D35/301 |
| Official title | {Constructions of two or more housings (B01D35/12 takes precedence)} |
| Display label | Constructions of two or more housings (B01D35/12 takes precedence) |
| Total patents | 60 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 5 |
| 2017 | 3 |
| 2018 | 8 |
| 2019 | 10 |
| 2020 | 5 |
| 2021 | 7 |
| 2022 | 4 |
| 2023 | 6 |
| 2024 | 3 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Replaceable filter cartridge assembly
US-2025262570-A1 · Aug 21, 2025 · US
Filter module for water dispensing device
US-12234171-B2 · Feb 25, 2025 · US
Replaceable filter cartridge assembly
US-12194395-B1 · Jan 14, 2025 · US
Filter system with flanged filter cartridge
US-2025001329-A1 · Jan 2, 2025 · US
Laundry washing machine
US-12180641-B2 · Dec 31, 2024 · US
Filter head, filter and filter assembly
US-2024238706-A1 · Jul 18, 2024 · US
Filter housing that accepts both single open end o-ring and double open end filter elements
US-12030004-B2 · Jul 9, 2024 · US
Modular filter manifold
US-11779866-B2 · Oct 10, 2023 · US
Filter arrangement
US-11725614-B2 · Aug 15, 2023 · US
Compact vehicle filter head
US-11724222-B2 · Aug 15, 2023 · US
Water purifying filter assembly
US-2023115880-A1 · Apr 13, 2023 · US
Laundry washing machine
US-2023018094-A1 · Jan 19, 2023 · US
Filter device
US-11549473-B2 · Jan 10, 2023 · US
High pressure filter
US-11433338-B2 · Sep 6, 2022 · US
Compact vehicle filter head
US-2022266179-A1 · Aug 25, 2022 · US
Filter module for water dispensing device
US-2022212970-A1 · Jul 7, 2022 · US
Water purifier and filter for the same
US-11312639-B2 · Apr 26, 2022 · US
Connector assembly, filter assembly, filter device, and method of use
US-11173436-B2 · Nov 16, 2021 · US
Modular filter manifold
US-2021331104-A1 · Oct 28, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D35/301?
- CPC B01D35/301 is the Cooperative Patent Classification code for “Constructions of two or more housings (B01D35/12 takes precedence).”
- How many patents are filed under CPC B01D35/301 (Constructions of two or more housings (B01D35/12 takes precedence))?
- Our database includes 60 publications tagged with this CPC code.
- Is patent activity under CPC B01D35/301 growing?
- Publication counts under this code: 3 in 2024 vs 5 in 2025 (latest complete years).