Stator with closed slots with a fluid injection cooling system for an electric machine and electric machine comprising said stator
US-2024063667-A1 · Feb 22, 2024 · US
Slot-closing devices
Slot-closing devices · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02K3/487 |
| Official title | Slot-closing devices |
| Display label | Slot-closing devices |
| Total patents | 373 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 18 |
| 2017 | 28 |
| 2018 | 22 |
| 2019 | 31 |
| 2020 | 39 |
| 2021 | 33 |
| 2022 | 49 |
| 2023 | 39 |
| 2024 | 45 |
| 2025 | 37 |
| 2026 | 11 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Stator, rotating electric machine, and method of manufacturing stator
US-2024006947-A1 · Jan 4, 2024 · US
Supporting device and method for supporting winding coils in a wind turbine generator
US-2017358968-A1 · Dec 14, 2017 · US
Wound rotor synchronous motor for vehicle
US-2017353092-A1 · Dec 7, 2017 · US
Electric Machine and Motor Vehicle
US-2017346360-A1 · Nov 30, 2017 · US
Rotor assembly and motor including same
US-2017338711-A1 · Nov 23, 2017 · US
Cutting device
US-9774232-B2 · Sep 26, 2017 · US
Rotating electrical machine including an insulator with a reinforcing portion
US-9768657-B2 · Sep 19, 2017 · US
Stator which permits good wedge support whilst optimising the magnetic circuit, and method for electrical insulation of the said stator
US-2017257012-A1 · Sep 7, 2017 · US
Rotor for a rotating electric machine
US-9735642-B2 · Aug 15, 2017 · US
Rotor for a rotating electric machine and electric motor
US-9685833-B2 · Jun 20, 2017 · US
Rotor for rotating electrical device
US-9667113-B2 · May 30, 2017 · US
Rotary electrical machine provided with a stator
US-2017133893-A1 · May 11, 2017 · US
Rotor for a rotating electric machine and rotating electric machine
US-9634526-B2 · Apr 25, 2017 · US
Brushless motor system for power tools
US-2017110946-A1 · Apr 20, 2017 · US
Canned motor and vacuum pump
US-9614411-B2 · Apr 4, 2017 · US
Wedge for stator having overmolded insulation
US-9614406-B2 · Apr 4, 2017 · US
Armature of rotating electric machine with improved wedges
US-9601961-B2 · Mar 21, 2017 · US
Electric machine
US-9601949-B2 · Mar 21, 2017 · US
Armature for rotating electric machine
US-2017063189-A1 · Mar 2, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02K3/487?
- CPC H02K3/487 is the Cooperative Patent Classification code for “Slot-closing devices.”
- How many patents are filed under CPC H02K3/487 (Slot-closing devices)?
- Our database includes 373 publications tagged with this CPC code.
- Is patent activity under CPC H02K3/487 growing?
- Publication counts under this code: 45 in 2024 vs 37 in 2025 (latest complete years).