Filter arrangement for a mobile device
US-2018250624-A1 · Sep 6, 2018 · US
with multiple filtering elements, characterised by their mutual disposition (B01D46/12 takes precedence)
with multiple filtering elements, characterised by their mutual disposition (B01D46/12 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 | B01D46/56 |
| Official title | with multiple filtering elements, characterised by their mutual disposition (B01D46/12 takes precedence) |
| Display label | with multiple filtering elements, characterised by their mutual disposition (B01D46/12 takes precedence) |
| Total patents | 254 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 20 |
| 2016 | 14 |
| 2017 | 24 |
| 2018 | 21 |
| 2019 | 26 |
| 2020 | 23 |
| 2021 | 29 |
| 2022 | 23 |
| 2023 | 26 |
| 2024 | 26 |
| 2025 | 19 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air cleaner
US-9950289-B2 · Apr 24, 2018 · US
Air cleaner
US-9821259-B2 · Nov 21, 2017 · US
Air cleaner
US-2017326490-A1 · Nov 16, 2017 · US
Air cleaner
US-2017326491-A1 · Nov 16, 2017 · US
Air cleaner
US-2017320003-A1 · Nov 9, 2017 · US
Air cleaner
US-2017320002-A1 · Nov 9, 2017 · US
Air treatment system
US-9808754-B2 · Nov 7, 2017 · US
Filter Assembly
US-2017291129-A1 · Oct 12, 2017 · US
Air cleaner and vehicle
US-2017284345-A1 · Oct 5, 2017 · US
Vacuum cleaner filtration system with filter cleaning mode
US-9756999-B2 · Sep 12, 2017 · US
Filter element having inner support and methods
US-2017252691-A1 · Sep 7, 2017 · US
Air cleaner
US-2017246580-A1 · Aug 31, 2017 · US
Air cleaner
US-2017246576-A1 · Aug 31, 2017 · US
Air cleaner
US-2017246577-A1 · Aug 31, 2017 · US
Air cleaner
US-2017246581-A1 · Aug 31, 2017 · US
Air cleaner
US-2017246578-A1 · Aug 31, 2017 · US
Air filtration device
US-9744493-B2 · Aug 29, 2017 · US
Filter frame
US-9737838-B2 · Aug 22, 2017 · US
Reactor for producing polycrystalline silicon and method for removing a silicon-containing layer on a component of such a reactor
US-9732420-B2 · Aug 15, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D46/56?
- CPC B01D46/56 is the Cooperative Patent Classification code for “with multiple filtering elements, characterised by their mutual disposition (B01D46/12 takes precedence).”
- How many patents are filed under CPC B01D46/56 (with multiple filtering elements, characterised by their mutual disposition (B01D46/12 takes precedence))?
- Our database includes 254 publications tagged with this CPC code.
- Is patent activity under CPC B01D46/56 growing?
- Publication counts under this code: 26 in 2024 vs 19 in 2025 (latest complete years).