Magnetic fluid sealing device for sealing fluid medium
US-11415226-B1 · Aug 16, 2022 · US
kept in sealing position by magnetic force
kept in sealing position by magnetic force · 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 | F16J15/43 |
| Official title | kept in sealing position by magnetic force |
| Display label | kept in sealing position by magnetic force |
| Total patents | 97 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 8 |
| 2017 | 14 |
| 2018 | 8 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 14 |
| 2022 | 19 |
| 2023 | 7 |
| 2024 | 6 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pipe connection compensation device by magnetic fluid sealing
US-11199265-B2 · Dec 14, 2021 · US
Magnetic fluid sealing device
US-11193592-B1 · Dec 7, 2021 · US
Bearing device
US-2021372467-A1 · Dec 2, 2021 · US
Rotating control device with active material
US-2021372224-A1 · Dec 2, 2021 · US
Magnetic aft frame side seals
US-11187095-B1 · Nov 30, 2021 · US
Magnetic sealing arrangement for a turbomachine
US-11187091-B1 · Nov 30, 2021 · US
Magnetic liquid sealing device having heat conductive rod and heat dissipating jacket
US-11174947-B2 · Nov 16, 2021 · US
Pipe connection compensation device by magnetic fluid sealing
US-2021324958-A1 · Oct 21, 2021 · US
Housing for magnetic fluid sealing device and agitation kettle/reaction kettle
US-11125337-B1 · Sep 21, 2021 · US
Magnetic fluid sealing device
US-11092241-B1 · Aug 17, 2021 · US
Assembly, more particularly turbomachine, comprising a shaft seal device
US-2021199198-A1 · Jul 1, 2021 · US
Magnetic liquid sealing device having heat conductive rod and heat dissipating jacket
US-2021123530-A1 · Apr 29, 2021 · US
Sealing device with convertible magnetic sealing medium
US-10989308-B1 · Apr 27, 2021 · US
Atomic layer deposition apparatus
US-10954597-B2 · Mar 23, 2021 · US
Magnetic liquid sealing device adapted to axial and radial displacements of connection
US-2020278031-A1 · Sep 3, 2020 · US
Cryogenic ferrofluid sealed rotary union
US-10704693-B2 · Jul 7, 2020 · US
Shaft seal device
US-2020132197-A1 · Apr 30, 2020 · US
Butterfly valve
US-2020041003-A1 · Feb 6, 2020 · US
Magnet fluid sealed bearing unit and drive motor having the bearing unit
US-10527099-B2 · Jan 7, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16J15/43?
- CPC F16J15/43 is the Cooperative Patent Classification code for “kept in sealing position by magnetic force.”
- How many patents are filed under CPC F16J15/43 (kept in sealing position by magnetic force)?
- Our database includes 97 publications tagged with this CPC code.
- Is patent activity under CPC F16J15/43 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).