Compressor device and refrigeration apparatus
US-12410952-B2 · Sep 9, 2025 · US
of dissimilar working principle
of dissimilar working principle · 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 | F04C23/005 |
| Official title | {of dissimilar working principle} |
| Display label | of dissimilar working principle |
| Total patents | 67 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 7 |
| 2017 | 8 |
| 2018 | 9 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 9 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 6 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Screw pump with a tapered suction-side section and a pressure-side section with a decreasing clearance
US-12378961-B2 · Aug 5, 2025 · US
Vacuum pumping system having a plurality of positive displacement vacuum pumps and method for operating the same
US-12173712-B2 · Dec 24, 2024 · US
Compressor and refrigeration cycle device
US-12117214-B2 · Oct 15, 2024 · US
Screw pump, screw rotor, method of manufacturing a screw rotor, and use of a screw pump or a screw rotor
US-2024328419-A1 · Oct 3, 2024 · US
Scroll compressor and air conditioner having same
US-12018682-B2 · Jun 25, 2024 · US
Degassing system, a degassing tower, and a water system having the same
US-11891310-B2 · Feb 6, 2024 · US
Compressor device and refrigeration apparatus
US-2023417461-A1 · Dec 28, 2023 · US
Vacuum exhaust system
US-2023400868-A1 · Dec 14, 2023 · US
Temperature control of a pumped gas flow
US-11841021-B2 · Dec 12, 2023 · US
Scroll compressor of lower compression type enabling active oil supply
US-11713752-B2 · Aug 1, 2023 · US
Scroll compressor and air conditioner having same
US-2022316474-A1 · Oct 6, 2022 · US
Rotary screw compressor
US-2022316480-A1 · Oct 6, 2022 · US
Rotary screw compressor rotor having work extraction mechanism
US-11359632-B2 · Jun 14, 2022 · US
Discharge casing insert for pump performance characteristics control
US-11209024-B2 · Dec 28, 2021 · US
Vacuum pumping system having a plurality of positive displacement vacuum pumps and method for operating the same
US-2021372405-A1 · Dec 2, 2021 · US
Vacuum pumping arrangement
US-11187222-B2 · Nov 30, 2021 · US
Degassing system, a degassing tower, and a water system having the same
US-2021230019-A1 · Jul 29, 2021 · US
Motor-operated compressor
US-11053941-B2 · Jul 6, 2021 · US
Compressor and refrigeration cycle device
US-2021140689-A1 · May 13, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C23/005?
- CPC F04C23/005 is the Cooperative Patent Classification code for “of dissimilar working principle.”
- How many patents are filed under CPC F04C23/005 (of dissimilar working principle)?
- Our database includes 67 publications tagged with this CPC code.
- Is patent activity under CPC F04C23/005 growing?
- Publication counts under this code: 5 in 2024 vs 6 in 2025 (latest complete years).