Air filtration media pack, filter element, air filtration media, and methods
US-2017216758-A1 · Aug 3, 2017 · US
with specific folds, e.g. having different lengths
with specific folds, e.g. having different lengths · 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 | B01D46/522 |
| Official title | {with specific folds, e.g. having different lengths} |
| Display label | with specific folds, e.g. having different lengths |
| Total patents | 303 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 26 |
| 2016 | 27 |
| 2017 | 29 |
| 2018 | 22 |
| 2019 | 39 |
| 2020 | 34 |
| 2021 | 28 |
| 2022 | 20 |
| 2023 | 27 |
| 2024 | 29 |
| 2025 | 15 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filtration media, pleated media pack, filter cartridge, and methods for manufacturing
US-2017216757-A1 · Aug 3, 2017 · US
Filter element with varied filter media pack characteristics
US-2017197165-A1 · Jul 13, 2017 · US
Filter system having a support tube
US-9623358-B2 · Apr 18, 2017 · US
Filter and Filter Cartridge
US-2017096973-A1 · Apr 6, 2017 · US
Filter and filter media having reduced restriction
US-2017065924-A1 · Mar 9, 2017 · US
Filter Insert Piece Comprising a Pleated Filter Element
US-2017056793-A1 · Mar 2, 2017 · US
Filter assembly; components therefor; and, methods
US-9527027-B2 · Dec 27, 2016 · US
Air filtration media pack, filter element, air filtration media, and methods
US-9517430-B2 · Dec 13, 2016 · US
Air filter system and air filter element for an air filter system
US-9511317-B2 · Dec 6, 2016 · US
Filter and filter media having reduced restriction
US-9504950-B2 · Nov 29, 2016 · US
Air filtration media for air purification
US-9498555-B2 · Nov 22, 2016 · US
Air filter element and air filter
US-9498744-B2 · Nov 22, 2016 · US
Filter element and filter arrangement
US-2016296867-A1 · Oct 13, 2016 · US
Filter element and filter system with a filter element
US-9457308-B2 · Oct 4, 2016 · US
Filter system with filter element
US-9457307-B2 · Oct 4, 2016 · US
Filter assembly including pleat tip shapes
US-2016265436-A1 · Sep 15, 2016 · US
Filter Element Having a Filter Bellows
US-2016263514-A1 · Sep 15, 2016 · US
Pleated filter media
US-9440178-B2 · Sep 13, 2016 · US
Filtration media pack, filter element, and methods
US-9433884-B2 · Sep 6, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D46/522?
- CPC B01D46/522 is the Cooperative Patent Classification code for “with specific folds, e.g. having different lengths.”
- How many patents are filed under CPC B01D46/522 (with specific folds, e.g. having different lengths)?
- Our database includes 303 publications tagged with this CPC code.
- Is patent activity under CPC B01D46/522 growing?
- Publication counts under this code: 29 in 2024 vs 15 in 2025 (latest complete years).