Cyclone dust collecting apparatus and hand-held cleaner having the same
US-10517449-B2 · Dec 31, 2019 · US
with external filters
with external filters · 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 | B04C2009/002 |
| Official title | {with external filters} |
| Display label | with external filters |
| Total patents | 218 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 5 |
| 2017 | 5 |
| 2018 | 19 |
| 2019 | 38 |
| 2020 | 47 |
| 2021 | 13 |
| 2022 | 34 |
| 2023 | 17 |
| 2024 | 21 |
| 2025 | 14 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Handheld surface cleaning apparatus
US-10506904-B2 · Dec 17, 2019 · US
Cyclone type liquid-vapor separator and forced circulation type evaporator using the same
US-2019336883-A1 · Nov 7, 2019 · US
Material manipulation in three-dimensional printing
US-10449696-B2 · Oct 22, 2019 · US
Surface cleaning apparatus
US-10433698-B2 · Oct 8, 2019 · US
Surface cleaning apparatus with dirt arrester having an axial step
US-2019298129-A1 · Oct 3, 2019 · US
Surface cleaning apparatus with an arrester plate having a variable gap
US-2019298130-A1 · Oct 3, 2019 · US
Surface cleaning apparatus with dirt arrester having an axial step
US-2019298128-A1 · Oct 3, 2019 · US
Cyclone type liquid-vapor separator and forced circulation type evaporator using the same
US-10384149-B2 · Aug 20, 2019 · US
Cleaner
US-2019231153-A1 · Aug 1, 2019 · US
Handheld vacuum cleaner
US-2019183303-A1 · Jun 20, 2019 · US
Handheld vacuum cleaner
US-2019183300-A1 · Jun 20, 2019 · US
Handheld vacuum cleaner
US-2019183304-A1 · Jun 20, 2019 · US
Vacuum Cleaner
US-2019150683-A1 · May 23, 2019 · US
Return filter
US-10272373-B2 · Apr 30, 2019 · US
Server dust collector
US-2019111375-A1 · Apr 18, 2019 · US
Dust collector and cleaner having the same
US-2019091702-A1 · Mar 28, 2019 · US
Surface cleaning apparatus
US-2019082919-A1 · Mar 21, 2019 · US
Surface cleaning apparatus
US-2019082907-A1 · Mar 21, 2019 · US
Surface cleaning apparatus
US-2019082925-A1 · Mar 21, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B04C2009/002?
- CPC B04C2009/002 is the Cooperative Patent Classification code for “with external filters.”
- How many patents are filed under CPC B04C2009/002 (with external filters)?
- Our database includes 218 publications tagged with this CPC code.
- Is patent activity under CPC B04C2009/002 growing?
- Publication counts under this code: 21 in 2024 vs 14 in 2025 (latest complete years).