Reciprocating Compressor And Fluid Injection System
US-2025389265-A1 · Dec 25, 2025 · US
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having cylinders in star- or fan-arrangement
having cylinders in star- or fan-arrangement · 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 | F04B27/04 |
| Official title | having cylinders in star- or fan-arrangement |
| Display label | having cylinders in star- or fan-arrangement |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 2 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reciprocating compressor and fluid injection system
US-2025389263-A1 · Dec 25, 2025 · US
Reciprocating Compressor And Fluid Injection System
US-2025389264-A1 · Dec 25, 2025 · US
Radial piston pump, in particular radial piston compressor
US-2024240627-A1 · Jul 18, 2024 · US
Compressible fluid separator pump
US-12036507-B2 · Jul 16, 2024 · US
Refrigerant Compressor Unit
US-2023384003-A1 · Nov 30, 2023 · US
Compressible fluid separator pump
US-2023256383-A1 · Aug 17, 2023 · US
Method for operating a compressed air supply device, and compressed air supply device
US-2022144033-A1 · May 12, 2022 · US
Compressor arrangement for compressed air supply facility
US-10767639-B2 · Sep 8, 2020 · US
Packaging machine with a fluid pump assembly
US-10569915-B2 · Feb 25, 2020 · US
Integrated air-supply unit
US-10391830-B2 · Aug 27, 2019 · US
Piston cylinder arrangement for an oil free compressor having cooling passageways and method of cooling wrist pin bearing surface
US-10208743-B2 · Feb 19, 2019 · US
Unitary fluid flow apparatus for inflating and deflating a device
US-10107279-B2 · Oct 23, 2018 · US
Piston Cylinder Arrangement for an Oil Free Compressor Having Cooling Passageways and Method of Cooling Wrist Pin Bearing Surface
US-2018100493-A1 · Apr 12, 2018 · US
Compressor having oil separator
US-9869307-B2 · Jan 16, 2018 · US
Integrated air-supply unit
US-2017036505-A1 · Feb 9, 2017 · US
Compressor Arrangement for Operating a Compressed Air Supply Facility, Compressed Air Supply Facility and Compressed Air Supply System, and Vehicle with Such a Compressed Air Supply Facility
US-2016001624-A1 · Jan 7, 2016 · US
Compressor
US-2015369233-A1 · Dec 24, 2015 · US
Hydraulic pump control apparatus and method of construction machine
US-9206798-B2 · Dec 8, 2015 · US
Unitary Fluid Flow Apparatus for Inflating and Deflating a Device
US-2015316045-A1 · Nov 5, 2015 · US