- 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: 740
10-year publication summary
|
0
|
2
|
9
|
31
|
48
|
68
|
128
|
156
|
178
|
76
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 17861 |
87 |
| Celgard, LLC | 313 |
59 |
| Samsung SDI Co., Ltd. | 10047 |
54 |
| Contemporary Amperex Technology Co., Limited | 9185 |
46 |
| Ningde Amperex Technology Limited | 2537 |
37 |
| Contemporary Amperex Technology (Hong Kong) Limited | 3943 |
35 |
| Teijin Limited | 1270 |
29 |
| Panasonic Intellectual Property Management Co., Ltd. | 33690 |
20 |
| Asahi Kasei Kabushiki Kaisha | 2798 |
12 |
| Asahi Kasei Battery Separator Corporation | 85 |
12 |
| Samsung Electronics Co., Ltd. | 154751 |
11 |
| Shenzhen Senior Technology Material Co., LTD | 93 |
10 |
| SK IE Technology Co., Ltd. | 206 |
10 |
| 24M Technologies, Inc. | 301 |
9 |
| SK Innovation Co., Ltd. | 1479 |
9 |
| Zhuhai CosMX Battery Co., Ltd. | 683 |
9 |
| GM Global Technology Operations LLC | 15893 |
8 |
| Zeon Corporation | 4122 |
8 |
| Shanghai Energy New Materials Technology Co., Ltd. | 107 |
8 |
| SK on Co., Ltd. | 2166 |
7 |
| Other owners | 260 |