Method for manufacturing solenoid sleeve
US-2019275601-A1 · Sep 12, 2019 · US
Guiding or setting position of armatures, e.g. retaining armatures in their end position
Guiding or setting position of armatures, e.g. retaining armatures in their end position · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F7/121 |
| Official title | Guiding or setting position of armatures, e.g. retaining armatures in their end position |
| Display label | Guiding or setting position of armatures, e.g. retaining armatures in their end position |
| Total patents | 156 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 9 |
| 2017 | 20 |
| 2018 | 14 |
| 2019 | 14 |
| 2020 | 19 |
| 2021 | 14 |
| 2022 | 25 |
| 2023 | 13 |
| 2024 | 11 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Solenoid valve having ventilation structure
US-10378670-B2 · Aug 13, 2019 · US
Electromagnetic actuator
US-10344887-B2 · Jul 9, 2019 · US
Starter for an internal combustion engine
US-10337484-B2 · Jul 2, 2019 · US
Electromagnetic actuator
US-10283245-B2 · May 7, 2019 · US
Electromagnetic valve and safety-related pneumatic system
US-10242786-B2 · Mar 26, 2019 · US
Fuel injection device
US-10208726-B2 · Feb 19, 2019 · US
Solenoid drive for a starter for an internal combustion engine
US-2018347536-A1 · Dec 6, 2018 · US
Solenoid valve
US-10145488-B2 · Dec 4, 2018 · US
Electromagnetic actuating device
US-10121578-B2 · Nov 6, 2018 · US
Starter for an internal combustion engine
US-2018274511-A1 · Sep 27, 2018 · US
Starter for an internal combustion engine
US-2018266380-A1 · Sep 20, 2018 · US
Electromagnetic actuator device and system comprising same
US-2018268977-A1 · Sep 20, 2018 · US
Latching solenoid which utilizes residual magnetism for the latch and a capacitor which is discharged to degauss and release the latch
US-10032551-B2 · Jul 24, 2018 · US
Electromagnetic locking devices, systems, and methods
US-2018204659-A1 · Jul 19, 2018 · US
Coil bobbin and electromagnetic device
US-9984803-B2 · May 29, 2018 · US
Fuel injection device
US-2018142656-A1 · May 24, 2018 · US
Electromagnetic valve
US-9903500-B2 · Feb 27, 2018 · US
Electronic device with curved bottom and operating method thereof
US-9892838-B2 · Feb 13, 2018 · US
Electromagnetic actuator
US-2018023723-A1 · Jan 25, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F7/121?
- CPC H01F7/121 is the Cooperative Patent Classification code for “Guiding or setting position of armatures, e.g. retaining armatures in their end position.”
- How many patents are filed under CPC H01F7/121 (Guiding or setting position of armatures, e.g. retaining armatures in their end position)?
- Our database includes 156 publications tagged with this CPC code.
- Is patent activity under CPC H01F7/121 growing?
- Publication counts under this code: 11 in 2024 vs 6 in 2025 (latest complete years).