Compressor for heat exchange system, heat exchange system and method for controlling operation of compressor
US-12305635-B2 · May 20, 2025 · US
with sliding valves controlled by the use of fluid other than the working fluid
with sliding valves controlled by the use of fluid other than the working fluid · 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 | F04C28/125 |
| Official title | {with sliding valves controlled by the use of fluid other than the working fluid} |
| Display label | with sliding valves controlled by the use of fluid other than the working fluid |
| Total patents | 27 |
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 | 1 |
| 2016 | 3 |
| 2017 | 2 |
| 2018 | 6 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 2 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compressor stop valve and associated system
US-11920593-B2 · Mar 5, 2024 · US
Dual-Stage Compressor, Control Method Thereof and Air Conditioning Unit
US-2022268280-A1 · Aug 25, 2022 · US
Rotary displacement compressor having a check valve and a backflow control valve arranged in series through a discharge pipe
US-11401934-B2 · Aug 2, 2022 · US
Compressor for heat exchange system, heat exchange system and method for controlling operation of compressor
US-2021285707-A1 · Sep 16, 2021 · US
Compressor stop valve and associated system
US-2021190071-A1 · Jun 24, 2021 · US
Compressor stop valve and associated system
US-10941775-B2 · Mar 9, 2021 · US
Control valve for variable displacement compressor
US-10883480-B2 · Jan 5, 2021 · US
Suction side slide valve for a screw compressor
US-10808699-B2 · Oct 20, 2020 · US
Control valve for variable displacement compressor
US-10760559-B2 · Sep 1, 2020 · US
Screw compressor
US-2020040896-A1 · Feb 6, 2020 · US
Rotary Displacement Compressor
US-2019338773-A1 · Nov 7, 2019 · US
Rotary compressor with vapor injection system
US-10344761-B2 · Jul 9, 2019 · US
Compressor stop valve and associated system
US-2019203716-A1 · Jul 4, 2019 · US
Suction side slide valve for a screw compressor
US-2019093657-A1 · Mar 28, 2019 · US
Screw compressor
US-10145374-B2 · Dec 4, 2018 · US
Rotary Compressor With Vapor Injection System
US-2018209423-A1 · Jul 26, 2018 · US
Screw compressor having a volume ratio being adjusted by end faces extending along from a low-pressure side end wall to discharge edges of a slider
US-10030653-B2 · Jul 24, 2018 · US
Control valve for variable displacement compressor
US-2018135610-A1 · May 17, 2018 · US
Screw compressor with adjustable internal volume ratio
US-9970440-B2 · May 15, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C28/125?
- CPC F04C28/125 is the Cooperative Patent Classification code for “with sliding valves controlled by the use of fluid other than the working fluid.”
- How many patents are filed under CPC F04C28/125 (with sliding valves controlled by the use of fluid other than the working fluid)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC F04C28/125 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).