Air filter arrangement; assembly; and, methods
US-2023415082-A1 · Dec 28, 2023 · US
consisting of multiple layers, e.g. coarse and fine filters; Coatings; Impregnations; Wet or moistened filter elements
consisting of multiple layers, e.g. coarse and fine filters; Coatings; Impregnations; Wet or moistened filter elements · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F02M35/02458 |
| Official title | {consisting of multiple layers, e.g. coarse and fine filters; Coatings; Impregnations; Wet or moistened filter elements} |
| Display label | consisting of multiple layers, e.g. coarse and fine filters; Coatings; Impregnations; Wet or moistened filter elements |
| Total patents | 69 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 6 |
| 2017 | 4 |
| 2018 | 6 |
| 2019 | 13 |
| 2020 | 9 |
| 2021 | 10 |
| 2022 | 7 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filter element and filter system
US-2023415085-A1 · Dec 28, 2023 · US
Filter cartridges; air cleaner assemblies; housings; features; components; and, methods
US-2023338883-A1 · Oct 26, 2023 · US
Super-pleated vehicle air filter
US-11536231-B2 · Dec 27, 2022 · US
Filter element with flow directing permeability layers
US-2022314144-A1 · Oct 6, 2022 · US
Air filter system for a utility vehicle
US-11434854-B2 · Sep 6, 2022 · US
Filter elements, air cleaner assemblies, and methods of use and assembly
US-11426691-B2 · Aug 30, 2022 · US
Combustion air filtration apparatus
US-11339750-B2 · May 24, 2022 · US
Filter system having a primary and a secondary filter element, secondary filter element and method
US-2022118399-A1 · Apr 21, 2022 · US
Filter element for an engine air filter assembly having a nonwoven pre-filter and related method
US-11280299-B2 · Mar 22, 2022 · US
Air filter arrangement; assembly; and, methods
US-2021394101-A1 · Dec 23, 2021 · US
Filter cartridges; air cleaner assemblies; housings; features; components; and, methods
US-11198083-B2 · Dec 14, 2021 · US
Combustion air filtration apparatus
US-2021340939-A1 · Nov 4, 2021 · US
Filter element for an engine air filter assembly having a nonwoven pre-filter and related method
US-11149699-B2 · Oct 19, 2021 · US
Folded Filter Media Pack with Varying Channels and Deep Corrugations
US-2021291103-A1 · Sep 23, 2021 · US
Air filter system for a utility vehicle
US-2021231085-A1 · Jul 29, 2021 · US
Folded filter media pack with varying channels and deep corrugations
US-11040302-B2 · Jun 22, 2021 · US
Variable efficiency filtration media
US-2021178309-A1 · Jun 17, 2021 · US
Air filter arrangement; assembly; and, methods
US-11020699-B2 · Jun 1, 2021 · US
Filter with perforated end cap and pre-formed gasket capping perforations
US-10961956-B2 · Mar 30, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02M35/02458?
- CPC F02M35/02458 is the Cooperative Patent Classification code for “consisting of multiple layers, e.g. coarse and fine filters; Coatings; Impregnations; Wet or moistened filter elements.”
- How many patents are filed under CPC F02M35/02458 (consisting of multiple layers, e.g. coarse and fine filters; Coatings; Impregnations; Wet or moistened filter elements)?
- Our database includes 69 publications tagged with this CPC code.
- Is patent activity under CPC F02M35/02458 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).