Pre-Cleaning Air Filter
US-2017368487-A1 · Dec 28, 2017 · US
for feeding
for feeding · 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 | B01D46/0041 |
| Official title | {for feeding} |
| Display label | for feeding |
| Total patents | 267 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 26 |
| 2017 | 35 |
| 2018 | 19 |
| 2019 | 24 |
| 2020 | 25 |
| 2021 | 26 |
| 2022 | 18 |
| 2023 | 30 |
| 2024 | 27 |
| 2025 | 25 |
| 2026 | 4 |
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
Parallel air filtration
US-2017328590-A1 · Nov 16, 2017 · US
Air purifier
US-9802145-B2 · Oct 31, 2017 · US
Cleaner
US-2017296958-A1 · Oct 19, 2017 · US
Portable industrial air filtration device
US-9776117-B2 · Oct 3, 2017 · US
Air filter element
US-2017276100-A1 · Sep 28, 2017 · US
Air cleaner and air conditioner having air-cleaning function
US-9764267-B2 · Sep 19, 2017 · US
Fabric filter louver assembly
US-2017246575-A1 · Aug 31, 2017 · US
Air cleaner
US-2017246570-A1 · Aug 31, 2017 · US
Filter Housing for Filter Fan
US-2017232373-A1 · Aug 17, 2017 · US
Air purifier
US-9713783-B2 · Jul 25, 2017 · US
Endoscope reprocessor, and leak test method of endoscope reprocessor
US-2017176283-A1 · Jun 22, 2017 · US
Particulate filter
US-9666235-B2 · May 30, 2017 · US
Air filter element
US-9657695-B2 · May 23, 2017 · US
Fragrance dispenser for air filter
US-2017136139-A1 · May 18, 2017 · US
Automatic dust removal device for vehicle
US-2017113517-A1 · Apr 27, 2017 · US
Inertial filter
US-9616369-B2 · Apr 11, 2017 · US
Method and apparatus for introducing auxiliary material
US-9616370-B2 · Apr 11, 2017 · US
Inertial separation pre-cleaner
US-9616373-B2 · Apr 11, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D46/0041?
- CPC B01D46/0041 is the Cooperative Patent Classification code for “for feeding.”
- How many patents are filed under CPC B01D46/0041 (for feeding)?
- Our database includes 267 publications tagged with this CPC code.
- Is patent activity under CPC B01D46/0041 growing?
- Publication counts under this code: 27 in 2024 vs 25 in 2025 (latest complete years).