- All sections
- H - Electricity
- H01M - Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy
- H01M 50/489 - Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
Patent holdings for IPC class H01M 50/489
Total number of patents in this class: 1205
10-year publication summary
|
3
|
1
|
3
|
15
|
60
|
102
|
172
|
255
|
262
|
241
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 15346 |
135 |
| Celgard, LLC | 315 |
61 |
| Panasonic Intellectual Property Management Co., Ltd. | 31882 |
53 |
| Samsung SDI Co., Ltd. | 8589 |
51 |
| Zeon Corporation | 4082 |
38 |
| Asahi Kasei Kabushiki Kaisha | 2686 |
37 |
| Daramic, LLC | 220 |
35 |
| LG Chem, Ltd. | 17656 |
34 |
| Teijin Limited | 1256 |
34 |
| Contemporary Amperex Technology (Hong Kong) Limited | 3744 |
30 |
| Toray Industries, Inc. | 6978 |
29 |
| Contemporary Amperex Technology Co., Limited | 7120 |
29 |
| Ningde Amperex Technology Limited | 2180 |
27 |
| GS Yuasa International Ltd. | 2059 |
26 |
| NGK Insulators, Ltd. | 5046 |
23 |
| SK Innovation Co., Ltd. | 1359 |
19 |
| SK IE Technology Co., Ltd. | 190 |
19 |
| Asahi Kasei Battery Separator Corporation | 81 |
19 |
| Sumitomo Chemical Company, Limited | 9047 |
18 |
| Murata Manufacturing Co., Ltd. | 24741 |
17 |
| Other owners | 471 |