Substation with power voltage transformer connected through circuit device to high or extra high voltage transmission line
US-2026058461-A1 · Feb 26, 2026 · US
Current limitation using saturable reactors (H02H9/023 takes precedence)
Current limitation using saturable reactors (H02H9/023 takes precedence) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02H9/021 |
| Official title | {Current limitation using saturable reactors (H02H9/023 takes precedence)} |
| Display label | Current limitation using saturable reactors (H02H9/023 takes precedence) |
| Total patents | 58 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 9 |
| 2017 | 5 |
| 2018 | 6 |
| 2019 | 4 |
| 2020 | 7 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 6 |
| 2024 | 3 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Circuit arrangement for current limiting and electrical system
US-12512666-B2 · Dec 30, 2025 · US
Power distribution over ethernet connection
US-2025350483-A1 · Nov 13, 2025 · US
System including an ideal diode circuit for negative transient protection
US-2025343409-A1 · Nov 6, 2025 · US
Overcurrent Limiting Unit and Detection Unit and Method for Manufacturing and Method for Operating the Same
US-2025118955-A1 · Apr 10, 2025 · US
Power distribution over ethernet connection
US-12273209-B2 · Apr 8, 2025 · US
Short-circuit current control in power systems
US-2025105621-A1 · Mar 27, 2025 · US
Power supply networks
US-2025096562-A1 · Mar 20, 2025 · US
Phase-controlled IGBT bridge type, GTO bridge type, and hybrid IGBT/semi-passive, GTO/semi-passive types fault current limiters (FCLs)
US-12149068-B2 · Nov 19, 2024 · US
Current transformer with bypass for use in a surge detector
US-12120792-B2 · Oct 15, 2024 · US
Power distribution system for moving body
US-11962142-B2 · Apr 16, 2024 · US
Circuit arrangement for current limiting and electrical system
US-2023369845-A1 · Nov 16, 2023 · US
Current transformer with bypass for use in a surge detector
US-2023180366-A1 · Jun 8, 2023 · US
Power distribution over ethernet connection
US-2023134335-A1 · May 4, 2023 · US
PHASE-CONTROLLED IGBT BRIDGE TYPE, GTO BRIDGE TYPE, AND HYBRID IGBT/SEMI-PASSIVE, GTO/SEMI-PASSIVE TYPES FAULT CURRENT LIMITERS (FCLs)
US-2023104736-A1 · Apr 6, 2023 · US
Power distribution system for moving body
US-2023030964-A1 · Feb 2, 2023 · US
Power distribution over ethernet connection
US-11546179-B2 · Jan 3, 2023 · US
Solid-state circuit breaker and breaking method for solid-state circuit breaker
US-11245255-B2 · Feb 8, 2022 · US
Limiter circuit
US-11228173-B2 · Jan 18, 2022 · US
Power distribution over ethernet connection
US-2021377059-A1 · Dec 2, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02H9/021?
- CPC H02H9/021 is the Cooperative Patent Classification code for “Current limitation using saturable reactors (H02H9/023 takes precedence).”
- How many patents are filed under CPC H02H9/021 (Current limitation using saturable reactors (H02H9/023 takes precedence))?
- Our database includes 58 publications tagged with this CPC code.
- Is patent activity under CPC H02H9/021 growing?
- Publication counts under this code: 3 in 2024 vs 7 in 2025 (latest complete years).