- 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: 641
10-year publication summary
|
1
|
0
|
2
|
8
|
29
|
48
|
62
|
125
|
155
|
162
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 15720 |
65 |
| Celgard, LLC | 319 |
57 |
| Samsung SDI Co., Ltd. | 8990 |
44 |
| Contemporary Amperex Technology (Hong Kong) Limited | 3837 |
36 |
| Contemporary Amperex Technology Co., Limited | 7597 |
34 |
| Ningde Amperex Technology Limited | 2291 |
30 |
| Teijin Limited | 1256 |
27 |
| Panasonic Intellectual Property Management Co., Ltd. | 32296 |
18 |
| Asahi Kasei Kabushiki Kaisha | 2712 |
12 |
| Asahi Kasei Battery Separator Corporation | 83 |
12 |
| Samsung Electronics Co., Ltd. | 148765 |
11 |
| SK Innovation Co., Ltd. | 1376 |
9 |
| SK IE Technology Co., Ltd. | 194 |
9 |
| Zhuhai CosMX Battery Co., Ltd. | 643 |
9 |
| GM Global Technology Operations LLC | 15340 |
8 |
| Shenzhen Senior Technology Material Co., LTD | 79 |
8 |
| Zeon Corporation | 4112 |
8 |
| 24M Technologies, Inc. | 285 |
7 |
| Shanghai Energy New Materials Technology Co., Ltd. | 102 |
7 |
| LG Chem, Ltd. | 17685 |
6 |
| Other owners | 224 |