Robot cleaner
US-10130227-B2 · Nov 20, 2018 · US
Combinations with other devices, e.g. fans, {expansion chambers, diffusors, water locks}(with filters B01D50/00)
Combinations with other devices, e.g. fans, {expansion chambers, diffusors, water locks}(with filters B01D50/00) · 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 | B04C9/00 |
| Official title | Combinations with other devices, e.g. fans, {expansion chambers, diffusors, water locks}(with filters B01D50/00) |
| Display label | Combinations with other devices, e.g. fans, {expansion chambers, diffusors, water locks}(with filters B01D50/00) |
| Total patents | 498 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 15 |
| 2016 | 19 |
| 2017 | 23 |
| 2018 | 41 |
| 2019 | 67 |
| 2020 | 86 |
| 2021 | 50 |
| 2022 | 49 |
| 2023 | 52 |
| 2024 | 55 |
| 2025 | 36 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Dust cup, dust cup assembly and handheld cleaner
US-2018213985-A1 · Aug 2, 2018 · US
Pool cleaner with cyclonic flow
US-2018155947-A1 · Jun 7, 2018 · US
Method and device for treating a mixture of expansion gas and filling product foam in a beverage filling plant
US-2017367378-A1 · Dec 28, 2017 · US
Fluid separation systems and methods
US-9821252-B2 · Nov 21, 2017 · US
Drilling fluid measurement system
US-2017328152-A1 · Nov 16, 2017 · US
Dust collector and vacuum cleaner having the same
US-2017296016-A1 · Oct 19, 2017 · US
Dust collector and vacuum cleaner having the same
US-2017296017-A1 · Oct 19, 2017 · US
Separator
US-2017274391-A1 · Sep 28, 2017 · US
Vacuum cleaner
US-9770152-B2 · Sep 26, 2017 · US
Robot cleaner
US-2017265701-A1 · Sep 21, 2017 · US
Pool cleaner power coupling
US-2017247896-A1 · Aug 31, 2017 · US
Separating apparatus and vacuum cleaner
US-2017209011-A1 · Jul 27, 2017 · US
Vacuum cleaner
US-2017209012-A1 · Jul 27, 2017 · US
Cyclone dust collector and vacuum cleaner having the same
US-2017188769-A1 · Jul 6, 2017 · US
A centrifugal separator
US-2017173596-A1 · Jun 22, 2017 · US
Method and apparatus for removal of gas bubbles from fluid
US-2017136170-A1 · May 18, 2017 · US
Integrated cyclone separation device
US-9636691-B2 · May 2, 2017 · US
Cyclone dust collector and vacuum cleaner having the same
US-2017112341-A1 · Apr 27, 2017 · US
Turbine Engine Oil Reservoir with Deaerator
US-2017096910-A1 · Apr 6, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B04C9/00?
- CPC B04C9/00 is the Cooperative Patent Classification code for “Combinations with other devices, e.g. fans, {expansion chambers, diffusors, water locks}(with filters B01D50/00).”
- How many patents are filed under CPC B04C9/00 (Combinations with other devices, e.g. fans, {expansion chambers, diffusors, water locks}(with filters B01D50/00))?
- Our database includes 498 publications tagged with this CPC code.
- Is patent activity under CPC B04C9/00 growing?
- Publication counts under this code: 55 in 2024 vs 36 in 2025 (latest complete years).