Backpack dust collector
US-11491433-B2 · Nov 8, 2022 · US
Reducing noise or vibration emissions
Reducing noise or vibration emissions · 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 | B01D46/4236 |
| Official title | {Reducing noise or vibration emissions} |
| Display label | Reducing noise or vibration emissions |
| Total patents | 91 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 7 |
| 2017 | 5 |
| 2018 | 12 |
| 2019 | 6 |
| 2020 | 9 |
| 2021 | 10 |
| 2022 | 10 |
| 2023 | 8 |
| 2024 | 11 |
| 2025 | 6 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Humidification and air cleaning apparatus
US-11428424-B2 · Aug 30, 2022 · US
Engine air cleaner with integrated compressor suppressor
US-11378045-B2 · Jul 5, 2022 · US
Air cleaner
US-2022161176-A1 · May 26, 2022 · US
Air cleaner housing for a vehicle
US-2022145836-A1 · May 12, 2022 · US
Multifunctional dust trap
US-2022146297-A1 · May 12, 2022 · US
Filter element for mounting in an air cleaner housing of a vehicle
US-2022126232-A1 · Apr 28, 2022 · US
Air purification-aromatherapy machine
US-11175069-B2 · Nov 16, 2021 · US
Vehicle air cleaner
US-11168653-B2 · Nov 9, 2021 · US
Cover for a fluff screen in a surface treatment apparatus
US-11160427-B2 · Nov 2, 2021 · US
Filter element comprising two offset outlets in communication with filter inner space, as well| as corresponding housing
US-11090594-B2 · Aug 17, 2021 · US
Humidification and air cleaning apparatus
US-2021190345-A1 · Jun 24, 2021 · US
Air purification-aromatherapy machine
US-2021180827-A1 · Jun 17, 2021 · US
Air cleaner of internal combustion engine
US-10982630-B2 · Apr 20, 2021 · US
Vehicle exhaust component
US-10975743-B1 · Apr 13, 2021 · US
Laundry processing device
US-2021079586-A1 · Mar 18, 2021 · US
Engine air cleaner with integrated compressor suppressor
US-2021054811-A1 · Feb 25, 2021 · US
Air cleaner
US-10844870-B2 · Nov 24, 2020 · US
Vehicle air cleaner
US-2020340434-A1 · Oct 29, 2020 · US
Backpack dust collector
US-2020282353-A1 · Sep 10, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D46/4236?
- CPC B01D46/4236 is the Cooperative Patent Classification code for “Reducing noise or vibration emissions.”
- How many patents are filed under CPC B01D46/4236 (Reducing noise or vibration emissions)?
- Our database includes 91 publications tagged with this CPC code.
- Is patent activity under CPC B01D46/4236 growing?
- Publication counts under this code: 11 in 2024 vs 6 in 2025 (latest complete years).