- All sections
- H - Electricity
- H01M - Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy
- H01M 50/449 - Separators, membranes or diaphragms characterised by the material having a layered structure
Patent holdings for IPC class H01M 50/449
Total number of patents in this class: 1007
10-year publication summary
|
1
|
7
|
9
|
27
|
73
|
95
|
165
|
233
|
281
|
61
|
| 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 |
187 |
| Celgard, LLC | 273 |
50 |
| Samsung SDI Co., Ltd. | 6671 |
46 |
| Zeon Corporation | 3854 |
38 |
| Contemporary Amperex Technology Co., Limited | 5805 |
31 |
| Ningde Amperex Technology Limited | 1512 |
28 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
25 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
24 |
| Sumitomo Chemical Company, Limited | 8808 |
21 |
| Daramic, LLC | 207 |
20 |
| NGK Insulators, Ltd. | 4589 |
18 |
| LG Chem, Ltd. | 17205 |
17 |
| GM Global Technology Operations LLC | 13620 |
16 |
| SK IE Technology Co., Ltd. | 152 |
15 |
| SK Innovation Co., Ltd. | 1015 |
14 |
| Toray Industries, Inc. | 6652 |
12 |
| Toyota Motor Corporation | 28582 |
11 |
| Teijin Limited | 1216 |
11 |
| Samsung Electronics Co., Ltd. | 131630 |
10 |
| Amtek Research International LLC | 53 |
9 |
| Other owners | 404 |