Quieted front exhaust motor
US-12496699-B2 · Dec 16, 2025 · US
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Power
Power · 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 | F04C2270/02 |
| Official title | Power |
| Display label | Power |
| Total patents | 22 |
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 | 2 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 4 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Quieted front exhaust motor
US-2024351180-A1 · Oct 24, 2024 · US
Method for controlling the rotational speed of an electric motor driven compressor and control unit adapted to perform the method
US-12066024-B2 · Aug 20, 2024 · US
Method and system for controling a pump
US-2024027975-A1 · Jan 25, 2024 · US
Method for controlling the rotational speed of an electric motor driven compressor and control unit adapted to perform the method
US-2022325714-A1 · Oct 13, 2022 · US
Method of monitoring a volume index valve of a compressor and diagnostic system
US-11460024-B2 · Oct 4, 2022 · US
Fluid Machine Device
US-2022252065-A1 · Aug 11, 2022 · US
Control device, control system, control method, recording medium and machine learning device
US-11396876-B2 · Jul 26, 2022 · US
Method of monitoring a volume index valve of a compressor and diagnostic system
US-2021381505-A1 · Dec 9, 2021 · US
Method for cooling a liquid-injected compressor element and liquid-inject compressor element for applying such a method
US-10927836-B2 · Feb 23, 2021 · US
Method for regulating the rotational speed of a compressor as a function of the available gas flow of a source and regulation thereby applied
US-10815997-B2 · Oct 27, 2020 · US
Controls and operation of variable frequency drives
US-10746448-B2 · Aug 18, 2020 · US
Control device, control system, control method, recording medium and machine learning device
US-2019368490-A1 · Dec 5, 2019 · US
Method of determining pump flow in twin screw positive displacement pumps
US-10451471-B2 · Oct 22, 2019 · US
Controls and operation of variable frequency drives
US-10295239-B2 · May 21, 2019 · US
Method for regulating the rotational speed of a compressor as a function of the available gas flow of a source and regulation thereby applied
US-2018283379-A1 · Oct 4, 2018 · US
Controls and operation of variable frequency drives
US-2017227273-A1 · Aug 10, 2017 · US
Method of determining pump flow in rotary positive displacement pumps
US-9678511-B2 · Jun 13, 2017 · US
Method and apparatus in connection with a screw compressor
US-2017016447-A1 · Jan 19, 2017 · US
System and method of remotely connecting and disconnecting the auxiliary power supply of a frequency inverter for variable capacity compressor employed in cooling systems
US-9309887-B2 · Apr 12, 2016 · US