Magnetic debris filter for compressor and compressor with magnetic debris filter
US-2026078757-A1 · Mar 19, 2026 · US
Magnetic couplings
Magnetic couplings · 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 | F04C29/0064 |
| Official title | {Magnetic couplings} |
| Display label | Magnetic couplings |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 4 |
| 2017 | 6 |
| 2018 | 6 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 3 |
| 2024 | 7 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Oil separator for compressor and compressor with oil separator
US-2026078758-A1 · Mar 19, 2026 · US
Electric pump
US-12486847-B2 · Dec 2, 2025 · US
Air gap magnetic coupling with thermal isolation
US-12456907-B2 · Oct 28, 2025 · US
Turbomachine provided with a magnetic drive pump
US-12442385-B2 · Oct 14, 2025 · US
Air gap magnetic coupling with thermal isolation
US-2024405653-A1 · Dec 5, 2024 · US
Surface driven downhole pump system
US-12140136-B2 · Nov 12, 2024 · US
Scroll compressor and method for operating the scroll compressor
US-12135028-B2 · Nov 5, 2024 · US
Electric pump
US-2024280106-A1 · Aug 22, 2024 · US
Scroll compressor and method for operating the scroll compressor
US-2024218875-A1 · Jul 4, 2024 · US
Rotary compressor with specific suction geometry
US-RE50022-E · Jun 25, 2024 · US
Turbomachine provided with a magnetic drive pump
US-2024141911-A1 · May 2, 2024 · US
Systems and methods for drive couplings for compressors
US-2023358241-A1 · Nov 9, 2023 · US
Surface driven downhole pump system
US-2023204027-A1 · Jun 29, 2023 · US
Surface driven downhole pump system
US-11592018-B2 · Feb 28, 2023 · US
Screw compressor with magnetic gear
US-11293438-B2 · Apr 5, 2022 · US
Surface driven downhole pump system
US-2021363992-A1 · Nov 25, 2021 · US
Scroll compressor with integrated refrigerant pump
US-10962011-B2 · Mar 30, 2021 · US
Compressor having counterweight assembly
US-10954944-B2 · Mar 23, 2021 · US
Rotary compressor with specific suction geometry
US-10954945-B2 · Mar 23, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C29/0064?
- CPC F04C29/0064 is the Cooperative Patent Classification code for “Magnetic couplings.”
- How many patents are filed under CPC F04C29/0064 (Magnetic couplings)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC F04C29/0064 growing?
- Publication counts under this code: 7 in 2024 vs 3 in 2025 (latest complete years).