Fan with shut-off valve and method of operating
US-2019390681-A1 · Dec 26, 2019 · US
especially adapted for elastic fluid pumps
especially adapted for elastic fluid pumps · 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 | F04D29/002 |
| Official title | {especially adapted for elastic fluid pumps} |
| Display label | especially adapted for elastic fluid pumps |
| Total patents | 297 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 9 |
| 2017 | 16 |
| 2018 | 21 |
| 2019 | 38 |
| 2020 | 34 |
| 2021 | 39 |
| 2022 | 32 |
| 2023 | 43 |
| 2024 | 34 |
| 2025 | 22 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Burst Protection Device For A Turbo Machine
US-2019376413-A1 · Dec 12, 2019 · US
Bladeless Ceiling Fan
US-2019345946-A1 · Nov 14, 2019 · US
Fan
US-2019293084-A1 · Sep 26, 2019 · US
Fan with shut-off valve and method of operating
US-10408218-B2 · Sep 10, 2019 · US
Vacuum pump
US-10364829-B2 · Jul 30, 2019 · US
Flap device
US-10350989-B2 · Jul 16, 2019 · US
Turbomolecular pump lubricant supply systems
US-2019203727-A1 · Jul 4, 2019 · US
Blower
US-2019195232-A1 · Jun 27, 2019 · US
Heat dissipating blower and refrigerator including the same
US-10330354-B2 · Jun 25, 2019 · US
Vacuum pump component, siegbahn type exhaust mechanism and compound vacuum pump
US-10280937-B2 · May 7, 2019 · US
Power blower
US-2019021243-A1 · Jan 24, 2019 · US
Flexible lance drive apparatus with autostroke function
US-2018372432-A1 · Dec 27, 2018 · US
Compressor bleed apparatus for a turbine engine
US-2018355877-A1 · Dec 13, 2018 · US
Vacuum pumping device, vacuum pump, and vacuum valve
US-2018340521-A1 · Nov 29, 2018 · US
Center ring and vacuum pump
US-2018274556-A1 · Sep 27, 2018 · US
Blower and vacuum cleaner
US-2018266438-A1 · Sep 20, 2018 · US
Cooling fan and electronic device having the same
US-10076056-B2 · Sep 11, 2018 · US
Fan and method and device for controlling the fan
US-2018252226-A1 · Sep 6, 2018 · US
Fan unit, method of manufacturing same and motor drive device
US-2018231008-A1 · Aug 16, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D29/002?
- CPC F04D29/002 is the Cooperative Patent Classification code for “especially adapted for elastic fluid pumps.”
- How many patents are filed under CPC F04D29/002 (especially adapted for elastic fluid pumps)?
- Our database includes 297 publications tagged with this CPC code.
- Is patent activity under CPC F04D29/002 growing?
- Publication counts under this code: 34 in 2024 vs 22 in 2025 (latest complete years).