Fan assembly with a removable filter assembly
US-12258978-B2 · Mar 25, 2025 · US
Suction grids; Strainers; Dust separation; Cleaning
Suction grids; Strainers; Dust separation; Cleaning · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F04D29/70 |
| Official title | Suction grids; Strainers; Dust separation; Cleaning |
| Display label | Suction grids; Strainers; Dust separation; Cleaning |
| Total patents | 71 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 5 |
| 2017 | 9 |
| 2018 | 7 |
| 2019 | 7 |
| 2020 | 6 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 6 |
| 2024 | 6 |
| 2025 | 9 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Expansion turbine and refrigeration device using same
US-2024410297-A1 · Dec 12, 2024 · US
Blowing device and blowing device operating method
US-2024369070-A1 · Nov 7, 2024 · US
Fan assembly with a removable filter assembly
US-2024309889-A1 · Sep 19, 2024 · US
Portable air flow apparatus
US-2024191882-A1 · Jun 13, 2024 · US
Portable air flow apparatus
US-11946651-B2 · Apr 2, 2024 · US
Blower
US-11933316-B2 · Mar 19, 2024 · US
Layered barrier cans for pumps and methods of producing the same
US-2023358237-A1 · Nov 9, 2023 · US
Filter system for a wind turbine, a wind turbine having a filter system and method for changing an oil filter of a filter system
US-11761531-B2 · Sep 19, 2023 · US
Pressure generator inlet filter apparatus
US-11623055-B2 · Apr 11, 2023 · US
Vacuum pump
US-2023097903-A1 · Mar 30, 2023 · US
Flow guide cover and server having same
US-2023039583-A1 · Feb 9, 2023 · US
Sound absorption device, heat dissipation device and server chassis
US-2023021389-A1 · Jan 26, 2023 · US
Portable air flow apparatus
US-2022282874-A1 · Sep 8, 2022 · US
Vacuum pump and control apparatus of vacuum pump
US-2022170470-A1 · Jun 2, 2022 · US
Blower
US-2022099109-A1 · Mar 31, 2022 · US
Blower
US-11286953-B2 · Mar 29, 2022 · US
Filter system for a wind turbine, a wind turbine having a filter system and method for changing an oil filter of a filter system
US-2021332878-A1 · Oct 28, 2021 · US
Dirt mitigation in a gas turbine engine
US-11125168-B2 · Sep 21, 2021 · US
Centrifugal compressor
US-11015618-B2 · May 25, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D29/70?
- CPC F04D29/70 is the Cooperative Patent Classification code for “Suction grids; Strainers; Dust separation; Cleaning.”
- How many patents are filed under CPC F04D29/70 (Suction grids; Strainers; Dust separation; Cleaning)?
- Our database includes 71 publications tagged with this CPC code.
- Is patent activity under CPC F04D29/70 growing?
- Publication counts under this code: 6 in 2024 vs 9 in 2025 (latest complete years).