Voltage regulator of a motor vehicle alternator, regulator brush-holder, and corresponding alternators
US-10097124-B2 · Oct 9, 2018 · US
Electricity
Electricity · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P9/305 |
| Official title | — |
| Display label | Electricity (mapped technology topic) |
| Total patents | 184 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 17 |
| 2017 | 18 |
| 2018 | 18 |
| 2019 | 20 |
| 2020 | 35 |
| 2021 | 16 |
| 2022 | 13 |
| 2023 | 9 |
| 2024 | 7 |
| 2025 | 9 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rotary electric machine and regulator manufacturing method
US-2018091026-A1 · Mar 29, 2018 · US
Voltage regulator of a motor vehicle alternator, regulator brush-holder, and corresponding alternators
US-2018083560-A1 · Mar 22, 2018 · US
Field Current Profile
US-2018069498-A1 · Mar 8, 2018 · US
Variable-speed constant-frequency power control
US-2017365993-A1 · Dec 21, 2017 · US
Fault detection system for isolated two-switch exciter drive gate driver
US-2017366125-A1 · Dec 21, 2017 · US
Device for controlling a motor vehicle alternator, and corresponding alternator
US-2017359015-A1 · Dec 14, 2017 · US
Field current profile
US-9843281-B2 · Dec 12, 2017 · US
Method of controlling a device for regulating an automotive vehicle alternator, corresponding regulating device and alternator
US-2017346428-A1 · Nov 30, 2017 · US
Vehicle charging apparatus
US-9793749-B2 · Oct 17, 2017 · US
Control device for rotating electric machine
US-2017294857-A1 · Oct 12, 2017 · US
Reactive power control for wind turbine generators
US-9780710-B2 · Oct 3, 2017 · US
Method of controlling multiple parallel-connected generators
US-9762160-B2 · Sep 12, 2017 · US
Speed detection circuits for permanent magnet alternators
US-2017229944-A1 · Aug 10, 2017 · US
Direct power and stator flux vector control of a generator for wind energy conversion system
US-9722520-B2 · Aug 1, 2017 · US
Energizing hydrogenerator
US-9698622-B2 · Jul 4, 2017 · US
High voltage direct current system with improved generator excitation
US-9660563-B2 · May 23, 2017 · US
Speed detection circuits for permanent magnet alternators
US-9653971-B2 · May 16, 2017 · US
Control loop of a digital control device of a rotary electrical machine with excitation for a motor vehicle
US-2017133964-A1 · May 11, 2017 · US
Excitation circuit of a motor vehicle alternator, voltage regulator, and alternator which incorporates it
US-2017063265-A1 · Mar 2, 2017 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02P9/305?
- CPC H02P9/305 is the Cooperative Patent Classification code for “Electricity.”
- How many patents are filed under CPC H02P9/305 (Electricity)?
- Our database includes 184 publications tagged with this CPC code.
- Is patent activity under CPC H02P9/305 growing?
- Publication counts under this code: 7 in 2024 vs 9 in 2025 (latest complete years).