Fluid routing for a vacuum pumping system
US-2025266268-A1 · Aug 21, 2025 · US
Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids · 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 | F04C28/00 |
| Official title | Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids |
| Display label | Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids |
| Total patents | 65 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 8 |
| 2018 | 5 |
| 2019 | 7 |
| 2020 | 2 |
| 2021 | 7 |
| 2022 | 9 |
| 2023 | 3 |
| 2024 | 8 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat Pump Systems With Capacity Modulation
US-2025188927-A1 · Jun 12, 2025 · US
Scroll compressor and method for controlling scroll compressor
US-12215687-B2 · Feb 4, 2025 · US
Vibration frequency adjustment system
US-2024384773-A1 · Nov 21, 2024 · US
Method for operating a vacuum pump and vacuum pump
US-2024302852-A1 · Sep 12, 2024 · US
Electric pump
US-12088175-B2 · Sep 10, 2024 · US
Oil-injected multi-stage compressor system and procedure for controlling such a compressor system
US-12018678-B2 · Jun 25, 2024 · US
Magnetic bearing compressor, air conditioner, and protective air gap value setting method
US-11965685-B2 · Apr 23, 2024 · US
Pump system
US-2024093691-A1 · Mar 21, 2024 · US
Refrigerant circuit compressor gas bearing feed
US-2024077239-A1 · Mar 7, 2024 · US
Program update method for the gas compressor system
US-2024068466-A1 · Feb 29, 2024 · US
Variable capacity compressor operation mode determination method and device, variable capacity compressor, and air conditioner
US-11808261-B2 · Nov 7, 2023 · US
Motor-driven compressor
US-2023318500-A1 · Oct 5, 2023 · US
Element for compressing or expanding a gas and method for controlling such element
US-11572878-B2 · Feb 7, 2023 · US
Electric pump
US-2022416617-A1 · Dec 29, 2022 · US
Systems and methods for controlling compressor motors
US-11530856-B2 · Dec 20, 2022 · US
Oil-injected multistage compressor device and method for controlling a compressor device
US-11519412-B2 · Dec 6, 2022 · US
Oil supply to the back pressure groove of a vane pump
US-11519270-B2 · Dec 6, 2022 · US
Oil-injected multistage compressor device and method for controlling such a compressor device
US-11371507-B2 · Jun 28, 2022 · US
Element for compressing or expanding a gas and method for controlling such element
US-2022186729-A1 · Jun 16, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C28/00?
- CPC F04C28/00 is the Cooperative Patent Classification code for “Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids.”
- How many patents are filed under CPC F04C28/00 (Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids)?
- Our database includes 65 publications tagged with this CPC code.
- Is patent activity under CPC F04C28/00 growing?
- Publication counts under this code: 8 in 2024 vs 7 in 2025 (latest complete years).