Charging device and terminal
US-2018367047-A1 · Dec 20, 2018 · US
using switches, contacts or markings, e.g. optical, magnetic or barcode
using switches, contacts or markings, e.g. optical, magnetic or barcode · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02J7/448 |
| Official title | {using switches, contacts or markings, e.g. optical, magnetic or barcode} |
| Display label | using switches, contacts or markings, e.g. optical, magnetic or barcode |
| Total patents | 203 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 9 |
| 2017 | 13 |
| 2018 | 49 |
| 2019 | 44 |
| 2020 | 31 |
| 2021 | 15 |
| 2022 | 13 |
| 2023 | 2 |
| 2024 | 6 |
| 2025 | 13 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Intelligent switch system and control method
US-2018366966-A1 · Dec 20, 2018 · US
Adapter and charging control method
US-2018358835-A1 · Dec 13, 2018 · US
Adapter and charging control method
US-2018358836-A1 · Dec 13, 2018 · US
Charging system and charging method, and power adapter and switching-mode power supply
US-2018351396-A1 · Dec 6, 2018 · US
Adapter and charging control method
US-2018342890-A1 · Nov 29, 2018 · US
Charging system and method, and power adapter
US-10141766-B2 · Nov 27, 2018 · US
Adapter And Charging Control Method
US-2018331559-A1 · Nov 15, 2018 · US
Charging system and method for terminal, power adapter and charging device
US-2018331612-A1 · Nov 15, 2018 · US
Adapter and charging control method
US-2018331563-A1 · Nov 15, 2018 · US
Charging system and charging method, and power adapter
US-10122201-B2 · Nov 6, 2018 · US
Method and apparatus for identifying battery pack types
US-10099570-B2 · Oct 16, 2018 · US
Charging system and charging method for terminal and terminal
US-2018294666-A1 · Oct 11, 2018 · US
Adapter and method of controlling charging process
US-2018269700-A1 · Sep 20, 2018 · US
Charging system, charging method, and power adapter
US-2018254711-A1 · Sep 6, 2018 · US
Charging device and method, power adapter and terminal
US-2018233939-A1 · Aug 16, 2018 · US
Charging system, protection method for preventing from impact of surge voltage and power adapter
US-2018183262-A1 · Jun 28, 2018 · US
Adapter and charging control method
US-2018145533-A1 · May 24, 2018 · US
Charging system and charging method for terminal and power adapter
US-2018123383-A1 · May 3, 2018 · US
Charging system and charging method, and power adapter
US-2018123376-A1 · May 3, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02J7/448?
- CPC H02J7/448 is the Cooperative Patent Classification code for “using switches, contacts or markings, e.g. optical, magnetic or barcode.”
- How many patents are filed under CPC H02J7/448 (using switches, contacts or markings, e.g. optical, magnetic or barcode)?
- Our database includes 203 publications tagged with this CPC code.
- Is patent activity under CPC H02J7/448 growing?
- Publication counts under this code: 6 in 2024 vs 13 in 2025 (latest complete years).