- 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: 680
10-year publication summary
|
0
|
2
|
9
|
30
|
48
|
64
|
124
|
155
|
175
|
22
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 16722 |
68 |
| Celgard, LLC | 317 |
58 |
| Samsung SDI Co., Ltd. | 9263 |
48 |
| Contemporary Amperex Technology Co., Limited | 8539 |
40 |
| Contemporary Amperex Technology (Hong Kong) Limited | 3889 |
35 |
| Ningde Amperex Technology Limited | 2409 |
33 |
| Teijin Limited | 1255 |
27 |
| Panasonic Intellectual Property Management Co., Ltd. | 32983 |
20 |
| Asahi Kasei Kabushiki Kaisha | 2742 |
12 |
| Asahi Kasei Battery Separator Corporation | 84 |
12 |
| Samsung Electronics Co., Ltd. | 151485 |
11 |
| Shenzhen Senior Technology Material Co., LTD | 88 |
9 |
| SK Innovation Co., Ltd. | 1401 |
9 |
| SK IE Technology Co., Ltd. | 196 |
9 |
| Zhuhai CosMX Battery Co., Ltd. | 665 |
9 |
| GM Global Technology Operations LLC | 15602 |
8 |
| 24M Technologies, Inc. | 296 |
8 |
| Zeon Corporation | 4122 |
8 |
| Shanghai Energy New Materials Technology Co., Ltd. | 104 |
7 |
| LG Chem, Ltd. | 17737 |
6 |
| Other owners | 243 |