- 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: 563
10-year publication summary
|
1
|
0
|
2
|
8
|
28
|
45
|
61
|
128
|
156
|
101
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 15055 |
63 |
| Celgard, LLC | 312 |
53 |
| Samsung SDI Co., Ltd. | 8330 |
39 |
| Contemporary Amperex Technology Co., Limited | 6643 |
27 |
| Contemporary Amperex Technology (Hong Kong) Limited | 3576 |
27 |
| Ningde Amperex Technology Limited | 2124 |
25 |
| Teijin Limited | 1246 |
23 |
| Panasonic Intellectual Property Management Co., Ltd. | 31475 |
16 |
| Asahi Kasei Kabushiki Kaisha | 2675 |
12 |
| SK Innovation Co., Ltd. | 1341 |
10 |
| SK IE Technology Co., Ltd. | 186 |
10 |
| Asahi Kasei Battery Separator Corporation | 77 |
10 |
| Samsung Electronics Co., Ltd. | 146346 |
9 |
| Zhuhai CosMX Battery Co., Ltd. | 621 |
9 |
| GM Global Technology Operations LLC | 15062 |
7 |
| Shenzhen Senior Technology Material Co., LTD | 74 |
7 |
| Shanghai Energy New Materials Technology Co., Ltd. | 100 |
7 |
| LG Chem, Ltd. | 17638 |
6 |
| Murata Manufacturing Co., Ltd. | 24542 |
6 |
| Daramic, LLC | 219 |
6 |
| Other owners | 191 |