Refrigeration cycle apparatus
US-2021372680-A1 · Dec 2, 2021 · US
with control systems for the injection of the fluid
with control systems for the injection of the 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 | F04C29/0014 |
| Official title | {with control systems for the injection of the fluid} |
| Display label | with control systems for the injection of the fluid |
| Total patents | 109 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 7 |
| 2017 | 4 |
| 2018 | 10 |
| 2019 | 8 |
| 2020 | 16 |
| 2021 | 14 |
| 2022 | 13 |
| 2023 | 12 |
| 2024 | 13 |
| 2025 | 7 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Screw compressor and refrigeration device
US-2021332819-A1 · Oct 28, 2021 · US
Gas expansion device and method for expanding gas
US-11156088-B2 · Oct 26, 2021 · US
Liquid-injected compressor or expander element and method for controlling the liquid injection of a compressor or expander device
US-11149733-B2 · Oct 19, 2021 · US
Oil circuit, oil-free compressor provided with such oil circuit and a method to control lubrication and/or cooling of such oil-free compressor via such oil circuit
US-11085448-B2 · Aug 10, 2021 · US
Gas expansion device and method for expanding gas
US-2021207482-A1 · Jul 8, 2021 · US
Oil feed type air compressor
US-11047390-B2 · Jun 29, 2021 · US
Compressor stop valve and associated system
US-2021190071-A1 · Jun 24, 2021 · US
Airend having a lubricant flow valve and controller
US-2021095657-A1 · Apr 1, 2021 · US
Compressor stop valve and associated system
US-10941775-B2 · Mar 9, 2021 · US
Method for regulating the liquid injection of a compressor or expander device, a liquid-injected compressor or expander device, and a liquid-injected compressor or expander element
US-10920777-B2 · Feb 16, 2021 · US
Compression device
US-10883504-B2 · Jan 5, 2021 · US
Scroll compressor with economizer injection
US-2020408209-A1 · Dec 31, 2020 · US
Lubricant injection for a screw compressor
US-10876531-B2 · Dec 29, 2020 · US
Liquid-Injected Screw Compressor
US-2020386231-A1 · Dec 10, 2020 · US
Refrigeration apparatus
US-2020370798-A1 · Nov 26, 2020 · US
Compressor system with purge gas system
US-10844857-B2 · Nov 24, 2020 · US
Method and device for controlling the oil temperature of an oil-injected compressor installation or vacuum pump using a flow distributor
US-10808700-B2 · Oct 20, 2020 · US
Oil Feed Type Air Compressor
US-2020240415-A1 · Jul 30, 2020 · US
Compressor system and lubricant control valve to regulate temperature of a lubricant
US-10724524-B2 · Jul 28, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C29/0014?
- CPC F04C29/0014 is the Cooperative Patent Classification code for “with control systems for the injection of the fluid.”
- How many patents are filed under CPC F04C29/0014 (with control systems for the injection of the fluid)?
- Our database includes 109 publications tagged with this CPC code.
- Is patent activity under CPC F04C29/0014 growing?
- Publication counts under this code: 13 in 2024 vs 7 in 2025 (latest complete years).