Variable displacement swash plate compressor
US-2020309106-A1 · Oct 1, 2020 · US
having plural sets of cylinders or pistons
having plural sets of cylinders or 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 | F04B27/12 |
| Official title | having plural sets of cylinders or pistons |
| Display label | having plural sets of cylinders or pistons |
| Total patents | 75 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 7 |
| 2017 | 16 |
| 2018 | 10 |
| 2019 | 8 |
| 2020 | 10 |
| 2021 | 5 |
| 2022 | 2 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing semispherical shoe for swash plate compressor and injection molding die
US-10670074-B2 · Jun 2, 2020 · US
Sampling pumps and gas analyzers
US-10656132-B2 · May 19, 2020 · US
Semispherical shoe for swash plate compressor and swash plate compressor
US-10598167-B2 · Mar 24, 2020 · US
Liquid delivery device and fluid chromatograph
US-2020032780-A1 · Jan 30, 2020 · US
Swash plate type liquid-pressure rotating device and method of manufacturing same
US-10533544-B2 · Jan 14, 2020 · US
Swash plate compressor
US-2019331105-A1 · Oct 31, 2019 · US
Piston compressor
US-2019301439-A1 · Oct 3, 2019 · US
Shoe for compressor
US-2019186479-A1 · Jun 20, 2019 · US
Compressor
US-2019154022-A1 · May 23, 2019 · US
Double-headed piston type swash plate compressor
US-10267299-B2 · Apr 23, 2019 · US
Compressor swash plate and compressor equipped with same
US-10184463-B2 · Jan 22, 2019 · US
Heat cycle system
US-10174971-B2 · Jan 8, 2019 · US
Double-headed swash type compressor and method for manufacturing cylinder block
US-10167858-B2 · Jan 1, 2019 · US
Double-headed piston type swash plate compressor
US-10145370-B2 · Dec 4, 2018 · US
Compressor
US-10087918-B2 · Oct 2, 2018 · US
Double-headed swash plate-type compressor
US-2018230986-A1 · Aug 16, 2018 · US
Compressor swash plate and compressor equipped with same
US-2018230980-A1 · Aug 16, 2018 · US
Reciprocating integral linear engine compressor
US-9957958-B2 · May 1, 2018 · US
Variable displacement swash plate compressor
US-9903353-B2 · Feb 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B27/12?
- CPC F04B27/12 is the Cooperative Patent Classification code for “having plural sets of cylinders or pistons.”
- How many patents are filed under CPC F04B27/12 (having plural sets of cylinders or pistons)?
- Our database includes 75 publications tagged with this CPC code.
- Is patent activity under CPC F04B27/12 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).