Secondary airflow paths for air compressors
US-12410799-B2 · Sep 9, 2025 · US
Details specially related to intermeshing engagement type pumps
Details specially related to intermeshing engagement type pumps · 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 | F04C18/082 |
| Official title | {Details specially related to intermeshing engagement type pumps} |
| Display label | Details specially related to intermeshing engagement type pumps |
| Total patents | 35 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 6 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Roots pump
US-12188474-B2 · Jan 7, 2025 · US
Secondary airflow paths for air compressors
US-2024337262-A1 · Oct 10, 2024 · US
Roots pump
US-2024287986-A1 · Aug 29, 2024 · US
Screw compressor
US-2024183357-A1 · Jun 6, 2024 · US
Roots pump containing rotors that capture and discharge a foreign substance
US-11976656-B2 · May 7, 2024 · US
Screw compressor having a screw rotor whose pitch changes in an axial direction from a suction end surface toward a discharge end surface
US-11933300-B2 · Mar 19, 2024 · US
Electric pump
US-11905954-B2 · Feb 20, 2024 · US
Roots pump
US-2023304497-A1 · Sep 28, 2023 · US
Screw compressor, and refrigeration device
US-11732710-B2 · Aug 22, 2023 · US
Element for compressing or expanding a gas and method for controlling such element
US-11572878-B2 · Feb 7, 2023 · US
Screw compressor, and refrigeration device
US-2023015175-A1 · Jan 19, 2023 · US
Screw compressor
US-2022341423-A1 · Oct 27, 2022 · US
Motor-driven roots pump with smooth activation in low-temperature environment
US-11401936-B2 · Aug 2, 2022 · US
Electric pump
US-2022186728-A1 · Jun 16, 2022 · US
Element for compressing or expanding a gas and method for controlling such element
US-2022186729-A1 · Jun 16, 2022 · US
Screw vacuum pump without internal cooling
US-11300123-B2 · Apr 12, 2022 · US
Motor-driven roots pump
US-2021025388-A1 · Jan 28, 2021 · US
Motor-driven roots pump
US-10738778-B2 · Aug 11, 2020 · US
Rotor for a positive displacement compressor
US-10514036-B2 · Dec 24, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C18/082?
- CPC F04C18/082 is the Cooperative Patent Classification code for “Details specially related to intermeshing engagement type pumps.”
- How many patents are filed under CPC F04C18/082 (Details specially related to intermeshing engagement type pumps)?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC F04C18/082 growing?
- Publication counts under this code: 6 in 2024 vs 2 in 2025 (latest complete years).