Aluminum foil and aluminum member for electrodes
US-2020243865-A1 · Jul 30, 2020 · US
perforated material
perforated material · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M4/742 |
| Official title | {perforated material} |
| Display label | perforated material |
| Total patents | 185 |
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 | 10 |
| 2016 | 11 |
| 2017 | 7 |
| 2018 | 10 |
| 2019 | 18 |
| 2020 | 26 |
| 2021 | 9 |
| 2022 | 20 |
| 2023 | 18 |
| 2024 | 23 |
| 2025 | 21 |
| 2026 | 12 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Metal foil, method for manufacturing metal foil, negative electrode for secondary battery, and positive electrode for secondary battery
US-2020194779-A1 · Jun 18, 2020 · US
Current collector, electrode plate including the same and electrochemical device
US-2020106104-A1 · Apr 2, 2020 · US
Perforated metal foil, method for manufacturing perforated metal foil, negative electrode for secondary battery, and positive electrode for secondary battery
US-2020082998-A1 · Mar 12, 2020 · US
Battery grid
US-2019393512-A1 · Dec 26, 2019 · US
Lithium metal anode electrode
US-10483534-B2 · Nov 19, 2019 · US
Method of manufacturing a lithium metal negative electrode
US-2019312255-A1 · Oct 10, 2019 · US
Electrode with perforated current collector and lithium secondary battery including the same
US-10418638-B2 · Sep 17, 2019 · US
Three-dimensional ion transport networks and current collectors for electrochemical cells
US-2019229343-A1 · Jul 25, 2019 · US
Method for manufacturing lithium secondary battery
US-2019221881-A1 · Jul 18, 2019 · US
Perforated metal foil manufacturing method
US-2019214648-A1 · Jul 11, 2019 · US
Method of manufacturing an electrochemical cell
US-2019207245-A1 · Jul 4, 2019 · US
Electrochemical cell and method of manufacturing
US-2019207211-A1 · Jul 4, 2019 · US
Electrochemical cell and method of manufacturing
US-2019207205-A1 · Jul 4, 2019 · US
Method of manufacturing an electrochemical cell
US-2019207208-A1 · Jul 4, 2019 · US
Three-dimensional ion transport networks and current collectors for electrochemical cells
US-10340528-B2 · Jul 2, 2019 · US
Lithium-ion secondary battery and method of manufacturing the same
US-10340527-B2 · Jul 2, 2019 · US
Sandwich electrodes and methods of making the same
US-2019181492-A1 · Jun 13, 2019 · US
Flexible battery cell
US-10276887-B2 · Apr 30, 2019 · US
Anode electrode composition of li-ion battery cell
US-2019123339-A1 · Apr 25, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M4/742?
- CPC H01M4/742 is the Cooperative Patent Classification code for “perforated material.”
- How many patents are filed under CPC H01M4/742 (perforated material)?
- Our database includes 185 publications tagged with this CPC code.
- Is patent activity under CPC H01M4/742 growing?
- Publication counts under this code: 23 in 2024 vs 21 in 2025 (latest complete years).