- 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: 311
10-year publication summary
|
0
|
1
|
0
|
2
|
6
|
19
|
37
|
57
|
125
|
44
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Celgard, LLC | 273 |
34 |
| LG Energy Solution, Ltd. | 10813 |
29 |
| Samsung SDI Co., Ltd. | 6671 |
27 |
| Ningde Amperex Technology Limited | 1512 |
15 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
14 |
| Contemporary Amperex Technology Co., Limited | 5805 |
13 |
| Teijin Limited | 1216 |
10 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
8 |
| Samsung Electronics Co., Ltd. | 131630 |
7 |
| Zhuhai CosMX Battery Co., Ltd. | 357 |
7 |
| Shenzhen Senior Technology Material Co., LTD | 46 |
6 |
| Zeon Corporation | 3854 |
6 |
| Murata Manufacturing Co., Ltd. | 22355 |
5 |
| SK Innovation Co., Ltd. | 1015 |
5 |
| SK IE Technology Co., Ltd. | 152 |
5 |
| LG Chem, Ltd. | 17205 |
4 |
| Apple Inc. | 50209 |
3 |
| Toyota Motor Corporation | 28582 |
3 |
| Huawei Technologies Co., Ltd. | 100781 |
3 |
| Massachusetts Institute of Technology | 9795 |
3 |
| Other owners | 104 |