- All sections
- H - Electricity
- H01M - Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy
- H01M 50/457 - Separators, membranes or diaphragms characterised by the material having a layered structure comprising three or more layers
Patent holdings for IPC class H01M 50/457
Total number of patents in this class: 539
10-year publication summary
|
1
|
0
|
2
|
7
|
27
|
45
|
60
|
126
|
156
|
83
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 14524 |
62 |
| Celgard, LLC | 307 |
51 |
| Samsung SDI Co., Ltd. | 8080 |
38 |
| Contemporary Amperex Technology Co., Limited | 6361 |
26 |
| Ningde Amperex Technology Limited | 2007 |
25 |
| Teijin Limited | 1236 |
20 |
| Contemporary Amperex Technology (Hong Kong) Limited | 3397 |
20 |
| Panasonic Intellectual Property Management Co., Ltd. | 31022 |
15 |
| Asahi Kasei Kabushiki Kaisha | 2640 |
12 |
| SK Innovation Co., Ltd. | 1303 |
10 |
| SK IE Technology Co., Ltd. | 183 |
10 |
| Samsung Electronics Co., Ltd. | 144426 |
9 |
| Zhuhai CosMX Battery Co., Ltd. | 590 |
9 |
| Asahi Kasei Battery Separator Corporation | 73 |
9 |
| Shenzhen Senior Technology Material Co., LTD | 70 |
7 |
| Shanghai Energy New Materials Technology Co., Ltd. | 96 |
7 |
| LG Chem, Ltd. | 17564 |
6 |
| Murata Manufacturing Co., Ltd. | 24369 |
6 |
| Daramic, LLC | 217 |
6 |
| Zeon Corporation | 4075 |
6 |
| Other owners | 185 |