Piston-cylinder assembly for a radial piston compressor, and radial piston compressor
US-2025172133-A1 · May 29, 2025 · US
Pistons
Pistons · 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 | F04B27/0409 |
| Official title | {Pistons} |
| Display label | Pistons |
| Total patents | 30 |
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 | 2 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 6 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Radial piston compressor with transmission element and piston guide ring
US-12286965-B2 · Apr 29, 2025 · US
Reciprocating-piston machine, compressed air supply system, vehicle and method for producing a reciprocating-piston machine
US-12055134-B2 · Aug 6, 2024 · US
Piston-cylinder assembly for a radial piston compressor, and radial piston compressor
US-2024011475-A1 · Jan 11, 2024 · US
Reciprocating compressor for use with an economizer
US-2023039145-A1 · Feb 9, 2023 · US
Piston ring, reciprocating compressor, method for selecting piston ring and method for evaluating life of piston ring
US-11441682-B2 · Sep 13, 2022 · US
Compressor
US-2022074399-A1 · Mar 10, 2022 · US
Reciprocating-piston machine, compressed air supply system, vehicle and method for producing a reciprocating-piston machine
US-2021404458-A1 · Dec 30, 2021 · US
Piston-type positive displacement machine with a pressure-adaptive piston-cylinder interface
US-11118681-B2 · Sep 14, 2021 · US
Reciprocating type compressor
US-10895255-B2 · Jan 19, 2021 · US
Reciprocating refrigeration compressor wrist pin retention
US-10823469-B2 · Nov 3, 2020 · US
Reciprocating refrigeration compressor wrist pin retention
US-10823468-B2 · Nov 3, 2020 · US
Piston ring, reciprocating compressor, method for selecting piston ring and method for evaluating life of piston ring
US-2020340582-A1 · Oct 29, 2020 · US
Piston-type positive displacement machine with a pressure-adaptive piston-cylinder interface
US-2020340581-A1 · Oct 29, 2020 · US
Oil-free vacuum pump having a prismatic piston and corresponding compressor
US-2020124036-A1 · Apr 23, 2020 · US
Reciprocating Refrigeration Compressor Wrist Pin Retention
US-2019137150-A1 · May 9, 2019 · US
Reciprocating Refrigeration Compressor Wrist Pin Retention
US-2019137151-A1 · May 9, 2019 · US
Reciprocating type compressor
US-2019093646-A1 · Mar 28, 2019 · US
System for piston rod monitoring
US-10225026-B2 · Mar 5, 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
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B27/0409?
- CPC F04B27/0409 is the Cooperative Patent Classification code for “Pistons.”
- How many patents are filed under CPC F04B27/0409 (Pistons)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC F04B27/0409 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).