Door operator with an abnormal voltage protection function and method for protection of a door operator from an abnormal voltage
US-12012796-B2 · Jun 18, 2024 · US
against over-voltage; against reduction of voltage; against phase interruption
against over-voltage; against reduction of voltage; against phase interruption · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02H7/09 |
| Official title | against over-voltage; against reduction of voltage; against phase interruption |
| Display label | against over-voltage; against reduction of voltage; against phase interruption |
| Total patents | 195 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 23 |
| 2016 | 23 |
| 2017 | 25 |
| 2018 | 16 |
| 2019 | 24 |
| 2020 | 16 |
| 2021 | 11 |
| 2022 | 16 |
| 2023 | 11 |
| 2024 | 17 |
| 2025 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fault shutdown control of an electric machine in a vehicle or other dc-powered torque system
US-2017317615-A1 · Nov 2, 2017 · US
Safe mode from mismatch between programmed voltage state and voltage state mapped to value of external device
US-2017317638-A1 · Nov 2, 2017 · US
Control Apparatus For Electric Rotating Machine
US-2017294854-A1 · Oct 12, 2017 · US
Power conversion device with overvoltage suppression
US-9787214-B2 · Oct 10, 2017 · US
Motor controller having function of determining power failure detection condition
US-2017279399-A1 · Sep 28, 2017 · US
Protection system and method for an electrical variable speed doubly fed induction machine
US-9768609-B2 · Sep 19, 2017 · US
System and method for a multi-phase snubber circuit
US-9768607-B2 · Sep 19, 2017 · US
Independent pathways for detecting fault condition in electric motor
US-9735726-B2 · Aug 15, 2017 · US
Motor drive apparatus having function for determining abnormality of main power supply voltage
US-2017141715-A1 · May 18, 2017 · US
Air-moving assemblies with flywheels
US-9568011-B2 · Feb 14, 2017 · US
Three-phase detection module
US-9557389-B2 · Jan 31, 2017 · US
Motor control apparatus equipped with protection operation command unit
US-2017017209-A1 · Jan 19, 2017 · US
Alternator overvoltage protection circuit
US-9537436-B2 · Jan 3, 2017 · US
Method of operating a protection device, associated computer program product, protection device and electrical installation
US-2016372916-A1 · Dec 22, 2016 · US
Loss-phase lack-voltage detection circuit for three-phase input power
US-2016356824-A1 · Dec 8, 2016 · US
Air-moving assemblies with flywheels
US-2016360650-A1 · Dec 8, 2016 · US
System and Method for a Multi-Phase Snubber Circuit
US-2016336733-A1 · Nov 17, 2016 · US
Air conditioner and compressor protection circuit thereof
US-2016329699-A1 · Nov 10, 2016 · US
Power conversion device
US-2016329824-A1 · Nov 10, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02H7/09?
- CPC H02H7/09 is the Cooperative Patent Classification code for “against over-voltage; against reduction of voltage; against phase interruption.”
- How many patents are filed under CPC H02H7/09 (against over-voltage; against reduction of voltage; against phase interruption)?
- Our database includes 195 publications tagged with this CPC code.
- Is patent activity under CPC H02H7/09 growing?
- Publication counts under this code: 17 in 2024 vs 13 in 2025 (latest complete years).