- 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: 621
10-year publication summary
|
0
|
4
|
1
|
3
|
12
|
40
|
72
|
134
|
250
|
74
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 10813 |
75 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
34 |
| Celgard, LLC | 273 |
32 |
| Zeon Corporation | 3854 |
24 |
| Toray Industries, Inc. | 6652 |
23 |
| LG Chem, Ltd. | 17205 |
21 |
| Daramic, LLC | 207 |
19 |
| Teijin Limited | 1216 |
19 |
| Samsung SDI Co., Ltd. | 6671 |
18 |
| GS Yuasa International Ltd. | 1834 |
17 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
16 |
| NGK Insulators, Ltd. | 4589 |
15 |
| Murata Manufacturing Co., Ltd. | 22355 |
13 |
| Ningde Amperex Technology Limited | 1512 |
12 |
| Sumitomo Chemical Company, Limited | 8808 |
9 |
| Contemporary Amperex Technology Co., Limited | 5805 |
9 |
| SK Innovation Co., Ltd. | 1015 |
9 |
| SK IE Technology Co., Ltd. | 152 |
9 |
| Sanyo Electric Co., Ltd. | 3926 |
8 |
| Global Graphene Group, Inc. | 246 |
7 |
| Other owners | 232 |