Filter structure with enhanced dirt holding capacity
US-12059644-B2 · Aug 13, 2024 · US
Loose filtering material, e.g. loose fibres
Loose filtering material, e.g. loose fibres · 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 | B01D39/02 |
| Official title | Loose filtering material, e.g. loose fibres |
| Display label | Loose filtering material, e.g. loose fibres |
| Total patents | 45 |
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 | 6 |
| 2016 | 4 |
| 2017 | 8 |
| 2018 | 4 |
| 2019 | 9 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 3 |
| 2024 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Viral filtration media, articles, and methods
US-2024207765-A1 · Jun 27, 2024 · US
Filtration media including porous polymeric material and degradable shape memory material
US-11913309-B2 · Feb 27, 2024 · US
Method and system for filtering formaldehyde from inoor air
US-2022370952-A1 · Nov 24, 2022 · US
Method for manufacturing a solid adsorbent fiber
US-11439978-B2 · Sep 13, 2022 · US
Filtration media including porous polymeric material and degradable shape memory material
US-2022010659-A1 · Jan 13, 2022 · US
Multistage fiber filtering apparatus capable of selectively filtering
US-11192050-B2 · Dec 7, 2021 · US
Cartridge filter using nanofiber composite fiber yarn and method for manufacturing same
US-11103817-B2 · Aug 31, 2021 · US
Heavy metal recycling process and material useful in such process
US-11091375-B2 · Aug 17, 2021 · US
Honeycomb structure
US-10730804-B2 · Aug 4, 2020 · US
Filter media including oriented fibers
US-2020215471-A1 · Jul 9, 2020 · US
Multistage fiber filtering apparatus capable of selectively filtering
US-2020179838-A1 · Jun 11, 2020 · US
Multistage fiber filtering apparatus capable of selectively filtering
US-10596495-B2 · Mar 24, 2020 · US
Aluminosilicates and coatings made therefrom for VOC removal
US-10589210-B2 · Mar 17, 2020 · US
Melt spun filtration media for respiratory devices and face masks
US-10456724-B2 · Oct 29, 2019 · US
Method and system for filtering formaldehyde from inoor air
US-2019314756-A1 · Oct 17, 2019 · US
Filter media including oriented fibers
US-10441909-B2 · Oct 15, 2019 · US
Filter media comprising fibers including charged particles
US-10384156-B2 · Aug 20, 2019 · US
Method for manufacturing a solid adsorbent fiber
US-2019201869-A1 · Jul 4, 2019 · US
Air filter and air cleaner using high density filter paper and vehicle using the same
US-10330058-B2 · Jun 25, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D39/02?
- CPC B01D39/02 is the Cooperative Patent Classification code for “Loose filtering material, e.g. loose fibres.”
- How many patents are filed under CPC B01D39/02 (Loose filtering material, e.g. loose fibres)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC B01D39/02 growing?
- Publication counts under this code: 3 in 2022 vs 3 in 2024 (latest complete years).