Air cleaner
US-9827523-B2 · Nov 28, 2017 · US
Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan
Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan · 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 | B01D2273/30 |
| Official title | Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan |
| Display label | Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan |
| Total patents | 615 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 17 |
| 2017 | 37 |
| 2018 | 15 |
| 2019 | 38 |
| 2020 | 51 |
| 2021 | 81 |
| 2022 | 85 |
| 2023 | 107 |
| 2024 | 92 |
| 2025 | 64 |
| 2026 | 22 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air cleaner and method for controlling an air cleaner
US-9821262-B2 · Nov 21, 2017 · US
Air cleaner
US-9821259-B2 · Nov 21, 2017 · US
Parallel air filtration
US-2017328590-A1 · Nov 16, 2017 · US
Air cleaner
US-2017326490-A1 · Nov 16, 2017 · US
Air cleaner
US-2017326491-A1 · Nov 16, 2017 · US
Air cleaner
US-2017320003-A1 · Nov 9, 2017 · US
Air cleaner
US-2017321715-A1 · Nov 9, 2017 · US
Air cleaner
US-2017321720-A1 · Nov 9, 2017 · US
Air cleaner
US-2017321719-A1 · Nov 9, 2017 · US
Air cleaner
US-2017321718-A1 · Nov 9, 2017 · US
Air cleaner
US-2017320002-A1 · Nov 9, 2017 · US
Air cleaner
US-2017321716-A1 · Nov 9, 2017 · US
Air cleaner
US-2017321717-A1 · Nov 9, 2017 · US
Portable industrial air filtration device
US-2017304757-A1 · Oct 26, 2017 · US
Portable industrial air filtration device
US-9776117-B2 · Oct 3, 2017 · US
Air cleaner and air conditioner having air-cleaning function
US-9764267-B2 · Sep 19, 2017 · US
Air cleaner
US-2017248339-A1 · Aug 31, 2017 · US
Air cleaner
US-2017246580-A1 · Aug 31, 2017 · US
Air cleaner
US-2017246576-A1 · Aug 31, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2273/30?
- CPC B01D2273/30 is the Cooperative Patent Classification code for “Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan.”
- How many patents are filed under CPC B01D2273/30 (Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan)?
- Our database includes 615 publications tagged with this CPC code.
- Is patent activity under CPC B01D2273/30 growing?
- Publication counts under this code: 92 in 2024 vs 64 in 2025 (latest complete years).