- 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: 1133
10-year publication summary
|
4
|
2
|
4
|
15
|
60
|
101
|
169
|
260
|
263
|
194
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 14924 |
132 |
| Celgard, LLC | 311 |
58 |
| Samsung SDI Co., Ltd. | 8276 |
49 |
| Panasonic Intellectual Property Management Co., Ltd. | 31330 |
48 |
| Zeon Corporation | 4078 |
38 |
| Asahi Kasei Kabushiki Kaisha | 2666 |
36 |
| Daramic, LLC | 219 |
33 |
| LG Chem, Ltd. | 17620 |
32 |
| Teijin Limited | 1242 |
30 |
| Toray Industries, Inc. | 6936 |
29 |
| Contemporary Amperex Technology Co., Limited | 6551 |
26 |
| Contemporary Amperex Technology (Hong Kong) Limited | 3523 |
25 |
| NGK Insulators, Ltd. | 4949 |
23 |
| GS Yuasa International Ltd. | 2027 |
23 |
| Ningde Amperex Technology Limited | 2109 |
23 |
| Murata Manufacturing Co., Ltd. | 24503 |
17 |
| Sumitomo Chemical Company, Limited | 9047 |
17 |
| SK Innovation Co., Ltd. | 1337 |
17 |
| SK IE Technology Co., Ltd. | 186 |
17 |
| Asahi Kasei Battery Separator Corporation | 77 |
16 |
| Other owners | 444 |