Cyclone separation device
US-10874966-B2 · Dec 29, 2020 · US
Shapes or dimensions
Shapes or dimensions · 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 | B04C5/081 |
| Official title | Shapes or dimensions |
| Display label | Shapes or dimensions |
| Total patents | 130 |
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 | 11 |
| 2016 | 9 |
| 2017 | 9 |
| 2018 | 10 |
| 2019 | 14 |
| 2020 | 18 |
| 2021 | 23 |
| 2022 | 13 |
| 2023 | 10 |
| 2024 | 6 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cyclone dust collector and vacuum cleaner having the same
US-10813512-B2 · Oct 27, 2020 · US
Cyclone separator and methods of using same
US-2020316618-A1 · Oct 8, 2020 · US
Surface cleaning apparatus, cyclonic air treatment member and surface cleaning apparatus including the same
US-2020229666-A1 · Jul 23, 2020 · US
Surface cleaning apparatus, cyclonic air treatment member and surface cleaning apparatus including the same
US-2020230621-A1 · Jul 23, 2020 · US
Surface cleaning apparatus, cyclonic air treatment member and surface cleaning apparatus including the same
US-2020229665-A1 · Jul 23, 2020 · US
Cyclone with guide vanes
US-2020122162-A1 · Apr 23, 2020 · US
Classifying apparatus, systems and methods
US-2019275532-A1 · Sep 12, 2019 · US
Air-sparged hydrocyclone for cryogenic gas vapor separation
US-10399092-B2 · Sep 3, 2019 · US
Cyclone separation device
US-2019184321-A1 · Jun 20, 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
Centrifugal fluid separator
US-2019176057-A1 · Jun 13, 2019 · US
Dust collector and vacuum cleaner having the same
US-10285551-B2 · May 14, 2019 · US
Dust collector and vacuum cleaner having the same
US-10271701-B2 · Apr 30, 2019 · US
Handheld vacuum cleaner
US-D844264-S · Mar 26, 2019 · US
Dust collector with a constant suction force
US-10226724-B2 · Mar 12, 2019 · US
Cyclonic separation apparatus
US-10213793-B2 · Feb 26, 2019 · US
Cylindrical filter screen with tensioning mechanism
US-10207205-B2 · Feb 19, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B04C5/081?
- CPC B04C5/081 is the Cooperative Patent Classification code for “Shapes or dimensions.”
- How many patents are filed under CPC B04C5/081 (Shapes or dimensions)?
- Our database includes 130 publications tagged with this CPC code.
- Is patent activity under CPC B04C5/081 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).