- All sections
- H - Electricity
- H01M - Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy
- H01M 50/491 - Porosity
Patent holdings for IPC class H01M 50/491
Total number of patents in this class: 1267
10-year publication summary
|
2
|
3
|
16
|
31
|
99
|
131
|
167
|
220
|
294
|
213
|
| 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 |
172 |
| Celgard, LLC | 312 |
69 |
| Samsung SDI Co., Ltd. | 10719 |
60 |
| Contemporary Amperex Technology Co., Limited | 10216 |
56 |
| Contemporary Amperex Technology (Hong Kong) Limited | 4024 |
54 |
| Ningde Amperex Technology Limited | 2729 |
41 |
| LG Chem, Ltd. | 17950 |
30 |
| SK IE Technology Co., Ltd. | 199 |
30 |
| SK Innovation Co., Ltd. | 1489 |
28 |
| Asahi Kasei Battery Separator Corporation | 89 |
27 |
| Asahi Kasei Kabushiki Kaisha | 2840 |
24 |
| Daramic, LLC | 221 |
24 |
| Teijin Limited | 1290 |
21 |
| GM Global Technology Operations LLC | 16188 |
19 |
| NGK Insulators, Ltd. | 5200 |
19 |
| Panasonic Intellectual Property Management Co., Ltd. | 34265 |
15 |
| Shanghai Energy New Materials Technology Co., Ltd. | 112 |
13 |
| Shenzhen Senior Technology Material Co., LTD | 105 |
11 |
| Samsung Electronics Co., Ltd. | 158442 |
10 |
| Enovix Corporation | 181 |
10 |
| Other owners | 534 |