Compound air filters and methods thereof
US-2017368490-A1 · Dec 28, 2017 · US
Other self-supporting filtering material {; Other filtering material (non-woven fabrics in general D04H3/00)}
Other self-supporting filtering material {; Other filtering material (non-woven fabrics in general D04H3/00)} · 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 | B01D39/14 |
| Official title | Other self-supporting filtering material {; Other filtering material (non-woven fabrics in general D04H3/00)} |
| Display label | Other self-supporting filtering material {; Other filtering material (non-woven fabrics in general D04H3/00)} |
| Total patents | 304 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 26 |
| 2016 | 25 |
| 2017 | 28 |
| 2018 | 31 |
| 2019 | 27 |
| 2020 | 26 |
| 2021 | 29 |
| 2022 | 28 |
| 2023 | 30 |
| 2024 | 24 |
| 2025 | 27 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compound air filter
US-2017368488-A1 · Dec 28, 2017 · US
Coalescing filter media
US-2017341006-A1 · Nov 30, 2017 · US
Filter media including flame retardant fibers
US-2017232372-A1 · Aug 17, 2017 · US
Superhydrophilic filter structure for selectively separating water and oil
US-9650262-B2 · May 16, 2017 · US
Filter medium for deactivating allergens
US-2017120178-A1 · May 4, 2017 · US
Retaining material for pollution control element, method for manufacturing the same, and pollution control device
US-2017096925-A1 · Apr 6, 2017 · US
Heavy metal recycling process and material useful in such process
US-2017096349-A1 · Apr 6, 2017 · US
Filter materials, filters, filtering systems, and methods of filtering
US-2017043277-A1 · Feb 16, 2017 · US
Method for removing hydrogen phosphate from an aqueous solution using alpha zirconium phosphate
US-9517424-B2 · Dec 13, 2016 · US
Method for producing porous bodies with enhanced properties
US-2016354759-A1 · Dec 8, 2016 · US
Porous bodies with enhanced pore architecture
US-2016354760-A1 · Dec 8, 2016 · US
Filter assembly and filtering system having the same
US-9474995-B2 · Oct 25, 2016 · US
Filter Medium and Filter Element with a Filter Medium
US-2016288033-A1 · Oct 6, 2016 · US
Filter elements
US-2016288025-A1 · Oct 6, 2016 · US
Laminated articles for microbial removal and low pressure drop filtration, methods of making, and methods of using same
US-2016289249-A1 · Oct 6, 2016 · US
Filter materials for treating and purifying gas
US-9440219-B2 · Sep 13, 2016 · US
Filter manufacturing machine, filter manufacturing method using the machine, and hollow filter
US-9427929-B2 · Aug 30, 2016 · US
Apparatus and method for fabricating anti-microbial air filter media and anti-microbial air filter media
US-9427690-B2 · Aug 30, 2016 · US
Filter media having an optimized gradient
US-2016214044-A1 · Jul 28, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D39/14?
- CPC B01D39/14 is the Cooperative Patent Classification code for “Other self-supporting filtering material {; Other filtering material (non-woven fabrics in general D04H3/00)}.”
- How many patents are filed under CPC B01D39/14 (Other self-supporting filtering material {; Other filtering material (non-woven fabrics in general D04H3/00)})?
- Our database includes 304 publications tagged with this CPC code.
- Is patent activity under CPC B01D39/14 growing?
- Publication counts under this code: 24 in 2024 vs 27 in 2025 (latest complete years).