Filter cartridges; air cleaner assemblies; housings; features components; and, methods
US-2018369735-A1 · Dec 27, 2018 · US
Particle separators, e.g. dust precipitators, using filters embodying folded {corrugated or wound sheet} material
Particle separators, e.g. dust precipitators, using filters embodying folded {corrugated or wound sheet} 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 | B01D46/52 |
| Official title | Particle separators, e.g. dust precipitators, using filters embodying folded {corrugated or wound sheet} material |
| Display label | Particle separators, e.g. dust precipitators, using filters embodying folded {corrugated or wound sheet} material |
| Total patents | 296 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 17 |
| 2017 | 20 |
| 2018 | 19 |
| 2019 | 34 |
| 2020 | 37 |
| 2021 | 25 |
| 2022 | 28 |
| 2023 | 31 |
| 2024 | 31 |
| 2025 | 31 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filter cartridges; air cleaner assemblies; housings; features; components; and, methods
US-2018345195-A1 · Dec 6, 2018 · US
Filter cartridges; air cleaner assemblies; housings; features; components; and, methods
US-2018257017-A1 · Sep 13, 2018 · US
Filter arrangement for a mobile device
US-2018250624-A1 · Sep 6, 2018 · US
Pneumatic filter and filter element
US-2018117517-A1 · May 3, 2018 · US
Air filter element
US-9873073-B2 · Jan 23, 2018 · US
Air filter and air cleaner using high density filter paper and vehicle using the same
US-2017335807-A1 · Nov 23, 2017 · US
Air cleaner arrangement with end support for cartridge; components; and, methods
US-2017326492-A1 · Nov 16, 2017 · US
Air filter device for filtering the intake air of a combustion engine, in particular for a hand-held small tool
US-2017306900-A1 · Oct 26, 2017 · US
Air filter having fluted filter media
US-9782713-B2 · Oct 10, 2017 · US
Filter arrangement; sealing system; and methods
US-2017282110-A1 · Oct 5, 2017 · US
Filter elements; air cleaner; assembly; and, methods
US-2017274314-A1 · Sep 28, 2017 · US
Filtration media pack, filter elements, and air filtration media
US-2017266603-A1 · Sep 21, 2017 · US
Filter elements, air cleaner assemblies, and methods of use and assembly
US-2017246571-A1 · Aug 31, 2017 · US
Air conditioner
US-9746192-B2 · Aug 29, 2017 · US
Air cleaner arrangements with end support for cartridge; components; and, methods
US-9718019-B2 · Aug 1, 2017 · US
Filter arrangement; sealing system; and methods
US-9707503-B2 · Jul 18, 2017 · US
Plate-Type Filter Element for Gas Filtration
US-2017182448-A1 · Jun 29, 2017 · US
Waved filter media and elements
US-9687771-B2 · Jun 27, 2017 · US
Filtration media pack, filter elements, and air filtration media
US-9623362-B2 · Apr 18, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D46/52?
- CPC B01D46/52 is the Cooperative Patent Classification code for “Particle separators, e.g. dust precipitators, using filters embodying folded {corrugated or wound sheet} material.”
- How many patents are filed under CPC B01D46/52 (Particle separators, e.g. dust precipitators, using filters embodying folded {corrugated or wound sheet} material)?
- Our database includes 296 publications tagged with this CPC code.
- Is patent activity under CPC B01D46/52 growing?
- Publication counts under this code: 31 in 2024 vs 31 in 2025 (latest complete years).