Axial flux switched reluctance motor and generator, and related systems and methods
US-12149134-B2 · Nov 19, 2024 · US
Machines with one rotor and two stators
Machines with one rotor and two stators · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02K16/04 |
| Official title | Machines with one rotor and two stators |
| Display label | Machines with one rotor and two stators |
| Total patents | 418 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 28 |
| 2016 | 33 |
| 2017 | 31 |
| 2018 | 46 |
| 2019 | 35 |
| 2020 | 47 |
| 2021 | 52 |
| 2022 | 40 |
| 2023 | 35 |
| 2024 | 35 |
| 2025 | 31 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electric motor enabling speed change and efficient range change accordingly
US-2024154559-A1 · May 9, 2024 · US
Rotating electric machine
US-2016352203-A1 · Dec 1, 2016 · US
Multiple speed motor with thermal overload protection
US-2016352191-A1 · Dec 1, 2016 · US
Control system for an electric motor
US-9509246-B2 · Nov 29, 2016 · US
Drive unit for multiphase permanent magnet synchronous motor
US-2016340151-A1 · Nov 24, 2016 · US
Magnet-free rotating electric machine
US-2016294267-A1 · Oct 6, 2016 · US
Magnetless rotating electric machine
US-2016294239-A1 · Oct 6, 2016 · US
Electric rotating machine with laterally magnetized magnets
US-2016294229-A1 · Oct 6, 2016 · US
Multi-gap rotating electric machine
US-2016276904-A1 · Sep 22, 2016 · US
Gas turbine engine with magnetic gearbox
US-2016258356-A1 · Sep 8, 2016 · US
Permanent magnet machine with two stators
US-9438091-B2 · Sep 6, 2016 · US
Electric motor and magnetic gear
US-9438096-B2 · Sep 6, 2016 · US
Multiple speed motor with thermal overload protection
US-9413211-B2 · Aug 9, 2016 · US
Multi-gap rotary machine with dual stator and one rotor with dual permanent magnets and salient poles with dimensions and ratios for torque maximization
US-9407116-B2 · Aug 2, 2016 · US
Electrical machine
US-9397543-B2 · Jul 19, 2016 · US
Axial gap-type power generator
US-9385577-B2 · Jul 5, 2016 · US
Rotating electrical machine apparatus
US-2016185431-A1 · Jun 30, 2016 · US
Electrical machines
US-2016177770-A1 · Jun 23, 2016 · US
Double-stator rotating electric machine
US-2016164386-A1 · Jun 9, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02K16/04?
- CPC H02K16/04 is the Cooperative Patent Classification code for “Machines with one rotor and two stators.”
- How many patents are filed under CPC H02K16/04 (Machines with one rotor and two stators)?
- Our database includes 418 publications tagged with this CPC code.
- Is patent activity under CPC H02K16/04 growing?
- Publication counts under this code: 35 in 2024 vs 31 in 2025 (latest complete years).