UPS systems and methods using dual mode rectifier/inverter
US-9806561-B2 · Oct 31, 2017 · US
in which the distribution system is disconnected from the normal source and connected to a standby source
in which the distribution system is disconnected from the normal source and connected to a standby source · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02J9/04 |
| Official title | in which the distribution system is disconnected from the normal source and connected to a standby source |
| Display label | in which the distribution system is disconnected from the normal source and connected to a standby source |
| Total patents | 272 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 25 |
| 2016 | 23 |
| 2017 | 21 |
| 2018 | 38 |
| 2019 | 30 |
| 2020 | 32 |
| 2021 | 28 |
| 2022 | 21 |
| 2023 | 12 |
| 2024 | 14 |
| 2025 | 27 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for collision monitoring
US-2017302076-A1 · Oct 19, 2017 · US
Reserve power system for data center
US-9793752-B1 · Oct 17, 2017 · US
System and method for operating a water heater using an auxiliary power source
US-9759450-B2 · Sep 12, 2017 · US
Standalone uninterruptible power supply
US-9713280-B2 · Jul 18, 2017 · US
Refrigeration system with photovoltaic power source
US-9657973-B2 · May 23, 2017 · US
Power supply system
US-9639074-B2 · May 2, 2017 · US
Bi-directional dc-dc converter
US-2017104365-A1 · Apr 13, 2017 · US
Battery charger for different power sources
US-9601938-B2 · Mar 21, 2017 · US
Lockout-Tagout Systems and Methods
US-2017054293-A1 · Feb 23, 2017 · US
Uninterruptible power supply and DC-DC converter
US-9564775-B2 · Feb 7, 2017 · US
Discharging circuit, image forming apparatus having the discharging circuit, and power supply unit
US-9559527-B2 · Jan 31, 2017 · US
System and method to improve network reliability
US-2016365750-A1 · Dec 15, 2016 · US
Uninterruptible power supply and method of use
US-2016359361-A1 · Dec 8, 2016 · US
Power control system with power drop out immunity and uncompromised startup time
US-9515485-B1 · Dec 6, 2016 · US
Standalone uninterruptible power supply
US-2016316586-A1 · Oct 27, 2016 · US
Low-power consumption standby circuit device, air conditioner and control method for air conditioner
US-2016273792-A1 · Sep 22, 2016 · US
Busbar connection assembly
US-9419394-B2 · Aug 16, 2016 · US
Electronic device, image processing apparatus, and device control method
US-9407113-B2 · Aug 2, 2016 · US
Key interlock system and method for safe operation of electric power distribution system
US-2016197483-A1 · Jul 7, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02J9/04?
- CPC H02J9/04 is the Cooperative Patent Classification code for “in which the distribution system is disconnected from the normal source and connected to a standby source.”
- How many patents are filed under CPC H02J9/04 (in which the distribution system is disconnected from the normal source and connected to a standby source)?
- Our database includes 272 publications tagged with this CPC code.
- Is patent activity under CPC H02J9/04 growing?
- Publication counts under this code: 14 in 2024 vs 27 in 2025 (latest complete years).