Rotor for rotary electric machine
US-10523070-B2 · Dec 31, 2019 · US
Rotor of the claw pole type
Rotor of the claw pole type · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02K21/044 |
| Official title | {Rotor of the claw pole type} |
| Display label | Rotor of the claw pole type |
| Total patents | 115 |
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 | 13 |
| 2016 | 8 |
| 2017 | 14 |
| 2018 | 7 |
| 2019 | 26 |
| 2020 | 16 |
| 2021 | 11 |
| 2022 | 14 |
| 2023 | 4 |
| 2024 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rotary electric machine
US-2019372443-A1 · Dec 5, 2019 · US
Enhanced permanent magnet claw pole segment geometry
US-2019363592-A1 · Nov 28, 2019 · US
Control apparatus for the rotary electrical machine
US-2019341867-A1 · Nov 7, 2019 · US
Rotary electrical machine drive system
US-2019334424-A1 · Oct 31, 2019 · US
Rotating electric machine
US-2019334425-A1 · Oct 31, 2019 · US
Rotor and rotating electric machine including rotor
US-2019319521-A1 · Oct 17, 2019 · US
Rotary electric machine rotor
US-2019260244-A1 · Aug 22, 2019 · US
Rotary electrical machine
US-2019252931-A1 · Aug 15, 2019 · US
Rotating electrical machine rotor
US-2019173334-A1 · Jun 6, 2019 · US
Claw pole having shaped claw pole segments
US-2019140498-A1 · May 9, 2019 · US
Rotary electrical machine comprising shaft with stepped diameters, and method for assembly of the machine
US-10284035-B2 · May 7, 2019 · US
Rotary electrical machine
US-2019131833-A1 · May 2, 2019 · US
Rotor for rotating electric machine
US-10277101-B2 · Apr 30, 2019 · US
Rotor of rotating electrical machine
US-2019123603-A1 · Apr 25, 2019 · US
Motor and rotor
US-2019097510-A1 · Mar 28, 2019 · US
Power transmission apparatus with rotating electrical machine
US-10215147-B2 · Feb 26, 2019 · US
Claw rotor with reduced cross-section, and alternator comprising rotor of this type
US-10193404-B2 · Jan 29, 2019 · US
Rotary electric machine for vehicles
US-10158264-B2 · Dec 18, 2018 · US
Motor and rotor
US-10141821-B2 · Nov 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02K21/044?
- CPC H02K21/044 is the Cooperative Patent Classification code for “Rotor of the claw pole type.”
- How many patents are filed under CPC H02K21/044 (Rotor of the claw pole type)?
- Our database includes 115 publications tagged with this CPC code.
- Is patent activity under CPC H02K21/044 growing?
- Publication counts under this code: 4 in 2023 vs 2 in 2024 (latest complete years).