Air filter element
US-2017276100-A1 · Sep 28, 2017 · US
with means for maintaining spacing between the pleats or folds
with means for maintaining spacing between the pleats or folds · 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 | B01D46/523 |
| Official title | {with means for maintaining spacing between the pleats or folds} |
| Display label | with means for maintaining spacing between the pleats or folds |
| Total patents | 287 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 24 |
| 2016 | 21 |
| 2017 | 25 |
| 2018 | 24 |
| 2019 | 25 |
| 2020 | 37 |
| 2021 | 32 |
| 2022 | 23 |
| 2023 | 30 |
| 2024 | 28 |
| 2025 | 14 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filter element having inner support and methods
US-2017252691-A1 · Sep 7, 2017 · US
Air filter configured in a roll
US-2017246583-A1 · Aug 31, 2017 · US
Window air filter
US-2017241193-A1 · Aug 24, 2017 · US
Filter Element of a Filter for Filtering Fluids, and Filter
US-2017225113-A9 · Aug 10, 2017 · US
Filtration media, pleated media pack, filter cartridge, and methods for manufacturing
US-2017216757-A1 · Aug 3, 2017 · US
A uniformly expandable air filter
US-2017216756-A1 · Aug 3, 2017 · US
Waved filter media and elements
US-9718020-B2 · Aug 1, 2017 · US
Air conditioner
US-9714773-B2 · Jul 25, 2017 · US
Filter element and method for producing a filter element
US-9669341-B2 · Jun 6, 2017 · US
Air filter element
US-9657695-B2 · May 23, 2017 · US
Particle filter as well as method for the manufacture thereof
US-2017120177-A1 · May 4, 2017 · US
Air conditioner
US-2017115028-A1 · Apr 27, 2017 · US
Air filter
US-9630136-B2 · Apr 25, 2017 · US
Filter Element with Filter Bellows
US-2017001138-A1 · Jan 5, 2017 · US
Air filter element and air filter
US-9498744-B2 · Nov 22, 2016 · US
Filter device, especially an air filter
US-9492773-B2 · Nov 15, 2016 · US
Filter element, device for folding a filter medium web and process for producing a zigzag-folded filter element
US-9486719-B2 · Nov 8, 2016 · US
Filter Element Having Filter Bellows
US-2016263513-A1 · Sep 15, 2016 · US
Collapsible air filter
US-2016263515-A1 · Sep 15, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D46/523?
- CPC B01D46/523 is the Cooperative Patent Classification code for “with means for maintaining spacing between the pleats or folds.”
- How many patents are filed under CPC B01D46/523 (with means for maintaining spacing between the pleats or folds)?
- Our database includes 287 publications tagged with this CPC code.
- Is patent activity under CPC B01D46/523 growing?
- Publication counts under this code: 28 in 2024 vs 14 in 2025 (latest complete years).