Control method of compressor and refrigerant circulation system
US-11841011-B2 · Dec 12, 2023 · US
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Number of working cylinders
Number of working cylinders · 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 | F04B2201/0807 |
| Official title | Number of working cylinders |
| Display label | Number of working cylinders |
| Total patents | 12 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 2 |
| 2021 | 3 |
| 2022 | 1 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compressor control method, control apparatus and control system
US-11486384-B2 · Nov 1, 2022 · US
Control Method of Compressor and Refrigerant Circulation System
US-2021301812-A1 · Sep 30, 2021 · US
Compressor Control Method, Control Apparatus and Control System
US-2021277885-A1 · Sep 9, 2021 · US
Method and Apparatus for Controlling Compressor to Switch Cylinder Mode, Unit, and Air Conditioner System
US-2021262713-A1 · Aug 26, 2021 · US
Economized reciprocating compressor
US-10253766-B2 · Apr 9, 2019 · US
Fluid-working machine and operating method
US-2019048869-A1 · Feb 14, 2019 · US
Fluid-working machine and operating method
US-10094372-B2 · Oct 9, 2018 · US
Economized Reciprocating Compressor
US-2018128254-A1 · May 10, 2018 · US
Fluid-working machine and operating method
US-2017298928-A9 · Oct 19, 2017 · US
Fluid-working machine and operating method
US-2016169222-A1 · Jun 16, 2016 · US
Fluid-working machine and operating method
US-9188119-B2 · Nov 17, 2015 · US