Dirt separator and vacuum cleaner
US-2018368637-A1 · Dec 27, 2018 · US
with internal filters, in the cyclone chamber or in the vortex finder
with internal filters, in the cyclone chamber or in the vortex finder · 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 | B04C2009/004 |
| Official title | {with internal filters, in the cyclone chamber or in the vortex finder} |
| Display label | with internal filters, in the cyclone chamber or in the vortex finder |
| Total patents | 169 |
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 | 16 |
| 2016 | 11 |
| 2017 | 14 |
| 2018 | 19 |
| 2019 | 25 |
| 2020 | 26 |
| 2021 | 22 |
| 2022 | 8 |
| 2023 | 11 |
| 2024 | 13 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Dirt separator and vacuum cleaner
US-2018368636-A1 · Dec 27, 2018 · US
Dirt separator and vacuum cleaner
US-2018368639-A1 · Dec 27, 2018 · US
Multistage cyclone and surface cleaning apparatus having same
US-2018353032-A1 · Dec 13, 2018 · US
Dust cup assembly and handheld cleaner having the same
US-2018333034-A1 · Nov 22, 2018 · US
Dust collector with a constant suction force
US-2018326336-A1 · Nov 15, 2018 · US
Dust collector with a constant suction force
US-10052579-B2 · Aug 21, 2018 · US
Dust cup, dust cup assembly and handheld cleaner
US-2018213985-A1 · Aug 2, 2018 · US
Cyclonic Separator
US-2018199775-A1 · Jul 19, 2018 · US
Cyclone dust collector and vacuum cleaner having the same
US-2018160871-A1 · Jun 14, 2018 · US
Cyclonic separator
US-9918602-B2 · Mar 20, 2018 · US
Dust collector and vacuum cleaner having the same
US-2018055317-A1 · Mar 1, 2018 · US
Particle separator
US-2018036663-A1 · Feb 8, 2018 · US
Filter and Cyclone Filter System
US-2018036746-A1 · Feb 8, 2018 · US
Energy storage container with vortex separator
US-9865852-B2 · Jan 9, 2018 · US
Handheld cleaner
US-2018000296-A1 · Jan 4, 2018 · US
Dust cup assembly and handheld cleaner having the same
US-2018000304-A1 · Jan 4, 2018 · US
Dust cup assembly and handheld cleaner having the same
US-2018000297-A1 · Jan 4, 2018 · US
Dust cup assembly and handheld cleaner having the same
US-2018000295-A1 · Jan 4, 2018 · US
Cylindrical filter screen with tensioning mechanism
US-2017368481-A1 · Dec 28, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B04C2009/004?
- CPC B04C2009/004 is the Cooperative Patent Classification code for “with internal filters, in the cyclone chamber or in the vortex finder.”
- How many patents are filed under CPC B04C2009/004 (with internal filters, in the cyclone chamber or in the vortex finder)?
- Our database includes 169 publications tagged with this CPC code.
- Is patent activity under CPC B04C2009/004 growing?
- Publication counts under this code: 13 in 2024 vs 4 in 2025 (latest complete years).