- 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: 1401
10-year publication summary
|
1
|
3
|
16
|
64
|
110
|
178
|
258
|
264
|
319
|
72
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 17171 |
155 |
| Celgard, LLC | 315 |
69 |
| Samsung SDI Co., Ltd. | 9590 |
65 |
| Panasonic Intellectual Property Management Co., Ltd. | 33248 |
59 |
| Contemporary Amperex Technology Co., Limited | 8773 |
48 |
| Zeon Corporation | 4126 |
42 |
| Ningde Amperex Technology Limited | 2464 |
40 |
| Asahi Kasei Kabushiki Kaisha | 2758 |
39 |
| LG Chem, Ltd. | 17786 |
38 |
| Daramic, LLC | 219 |
38 |
| Teijin Limited | 1260 |
35 |
| Contemporary Amperex Technology (Hong Kong) Limited | 3905 |
33 |
| Toray Industries, Inc. | 7028 |
30 |
| GS Yuasa International Ltd. | 2186 |
28 |
| NGK Insulators, Ltd. | 5179 |
23 |
| SK Innovation Co., Ltd. | 1421 |
23 |
| SK IE Technology Co., Ltd. | 197 |
23 |
| Asahi Kasei Battery Separator Corporation | 85 |
22 |
| Sumitomo Chemical Company, Limited | 9052 |
20 |
| Murata Manufacturing Co., Ltd. | 25398 |
18 |
| Other owners | 553 |