Filtering device, generator and wind turbine generator system
US-2022410055-A1 · Dec 29, 2022 · US
Protecting screens at filter inlet or outlet
Protecting screens at filter inlet or outlet · 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 | B01D46/645 |
| Official title | {Protecting screens at filter inlet or outlet} |
| Display label | Protecting screens at filter inlet or outlet |
| Total patents | 92 |
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 | 2 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 12 |
| 2020 | 9 |
| 2021 | 16 |
| 2022 | 10 |
| 2023 | 16 |
| 2024 | 5 |
| 2025 | 6 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air filtering system
US-11524254-B2 · Dec 13, 2022 · US
Safety filter snap fit system
US-11452957-B2 · Sep 27, 2022 · US
Filter with protective/supportive flow face grating
US-11406924-B2 · Aug 9, 2022 · US
Filter assembly
US-11344834-B2 · May 31, 2022 · US
Automatic clean air filter for air conditioner unit
US-11298638-B2 · Apr 12, 2022 · US
Interlocked stable filter assembly
US-2022047981-A1 · Feb 17, 2022 · US
Robot purifier capable of rotating vertically and horizontally
US-11229870-B2 · Jan 25, 2022 · US
Screen assembly for construction vehicle
US-2021394591-A1 · Dec 23, 2021 · US
Filter assembly and floor cleaner
US-2021378477-A1 · Dec 9, 2021 · US
Air filter assembly with a permeable baffle
US-2021354069-A1 · Nov 18, 2021 · US
Interlocked stable filter assembly
US-11167234-B2 · Nov 9, 2021 · US
Smoke Evacuating Fryer
US-2021330125-A1 · Oct 28, 2021 · US
Nanoporous metal foam gas and fluid filters
US-2021322909-A1 · Oct 21, 2021 · US
Fan assembly
US-11110380-B2 · Sep 7, 2021 · US
Air filter precleaner
US-2021260514-A1 · Aug 26, 2021 · US
Environmental air cleaning device, road vehicle having environmental air cleaning device, and filter element
US-11065942-B2 · Jul 20, 2021 · US
Automatic clean air filter for air conditioner unit
US-2021205742-A1 · Jul 8, 2021 · US
Siloxane mitigation in machine system having blower for pressure drop compensation
US-2021190017-A1 · Jun 24, 2021 · US
Airborne molecular contamination filter cartridge system with combustible filter cartridge and reusable frame
US-10987612-B2 · Apr 27, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D46/645?
- CPC B01D46/645 is the Cooperative Patent Classification code for “Protecting screens at filter inlet or outlet.”
- How many patents are filed under CPC B01D46/645 (Protecting screens at filter inlet or outlet)?
- Our database includes 92 publications tagged with this CPC code.
- Is patent activity under CPC B01D46/645 growing?
- Publication counts under this code: 5 in 2024 vs 6 in 2025 (latest complete years).