- 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: 1307
10-year publication summary
|
3
|
1
|
3
|
15
|
62
|
106
|
174
|
257
|
264
|
319
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 16152 |
143 |
| Celgard, LLC | 319 |
67 |
| Samsung SDI Co., Ltd. | 8968 |
58 |
| Panasonic Intellectual Property Management Co., Ltd. | 32590 |
57 |
| Zeon Corporation | 4116 |
40 |
| Contemporary Amperex Technology Co., Limited | 7901 |
39 |
| Asahi Kasei Kabushiki Kaisha | 2716 |
38 |
| Daramic, LLC | 217 |
36 |
| LG Chem, Ltd. | 17704 |
35 |
| Teijin Limited | 1259 |
35 |
| Contemporary Amperex Technology (Hong Kong) Limited | 3861 |
33 |
| Ningde Amperex Technology Limited | 2336 |
32 |
| Toray Industries, Inc. | 7016 |
30 |
| GS Yuasa International Ltd. | 2109 |
27 |
| NGK Insulators, Ltd. | 5154 |
23 |
| SK Innovation Co., Ltd. | 1386 |
22 |
| SK IE Technology Co., Ltd. | 194 |
22 |
| Asahi Kasei Battery Separator Corporation | 83 |
20 |
| Sumitomo Chemical Company, Limited | 9098 |
18 |
| Murata Manufacturing Co., Ltd. | 25092 |
17 |
| Other owners | 515 |