Rotary Pump
US-2025198405-A1 · Jun 19, 2025 · US
of the non-return type
of the non-return type · 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 | F04C15/066 |
| Official title | {of the non-return type} |
| Display label | of the non-return type |
| Total patents | 39 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 5 |
| 2021 | 7 |
| 2022 | 6 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electromotive oil pump comprising a non-return valve
US-12305639-B2 · May 20, 2025 · US
Scroll compressor and refrigeration apparatus
US-12297830-B2 · May 13, 2025 · US
Primer pump assembly and a method of cooling a marine vessel
US-2024344519-A1 · Oct 17, 2024 · US
Scroll compressor and refrigeration apparatus
US-2024271620-A1 · Aug 15, 2024 · US
Check valve and hydraulic gerotor or geroler machine
US-2024142009-A1 · May 2, 2024 · US
Pump unit for a drive train of a motor vehicle
US-11885331-B2 · Jan 30, 2024 · US
Electric/hydraulic safety valve
US-11885202-B2 · Jan 30, 2024 · US
Pump device with air introduction hole that opens into pump chamber at predetermined opening time immediately before suction stroke
US-11795945-B2 · Oct 24, 2023 · US
Liquid pump, in particular for providing a supply to a transmission or to a clutch in the drive train of a motor vehicle
US-11686306-B2 · Jun 27, 2023 · US
Pump device
US-11585341-B2 · Feb 21, 2023 · US
Quick startup device for centrifugal pump
US-11555497-B2 · Jan 17, 2023 · US
Fluid pump and outlet check valve assembly thereof
US-11499559-B2 · Nov 15, 2022 · US
Pump device
US-2022341419-A1 · Oct 27, 2022 · US
Valve arrangement, in particular a reflux valve with a pressed-in ball holder
US-11480257-B2 · Oct 25, 2022 · US
Quick startup device for centrifugal pump
US-2022325716-A1 · Oct 13, 2022 · US
In-wheel motor vehicle drive apparatus
US-11447004-B2 · Sep 20, 2022 · US
Fluid pump and outlet check valve assembly thereof
US-2022136511-A1 · May 5, 2022 · US
Miniature high pressure pump and electrical hydraulic actuation system
US-11193507-B2 · Dec 7, 2021 · US
Pump unit for a drive train of a motor vehicle
US-2021270267-A1 · Sep 2, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C15/066?
- CPC F04C15/066 is the Cooperative Patent Classification code for “of the non-return type.”
- How many patents are filed under CPC F04C15/066 (of the non-return type)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC F04C15/066 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).