- 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: 1983
10-year publication summary
|
10
|
27
|
75
|
103
|
167
|
244
|
299
|
300
|
358
|
272
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 19239 |
303 |
| Contemporary Amperex Technology Co., Limited | 10216 |
136 |
| Samsung SDI Co., Ltd. | 10719 |
115 |
| Panasonic Intellectual Property Management Co., Ltd. | 34265 |
81 |
| Celgard, LLC | 312 |
67 |
| Ningde Amperex Technology Limited | 2729 |
58 |
| Zeon Corporation | 4161 |
57 |
| Contemporary Amperex Technology (Hong Kong) Limited | 4024 |
49 |
| SK IE Technology Co., Ltd. | 199 |
36 |
| SK Innovation Co., Ltd. | 1489 |
34 |
| LG Chem, Ltd. | 17950 |
33 |
| Daramic, LLC | 221 |
27 |
| Asahi Kasei Kabushiki Kaisha | 2840 |
26 |
| Toyota Motor Corporation | 35927 |
25 |
| Shenzhen Senior Technology Material Co., LTD | 105 |
25 |
| Teijin Limited | 1290 |
25 |
| NGK Insulators, Ltd. | 5200 |
24 |
| Zhuhai CosMX Battery Co., Ltd. | 730 |
20 |
| Sslm Co., Ltd. | 94 |
20 |
| GM Global Technology Operations LLC | 16188 |
19 |
| Other owners | 803 |