- 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: 458
10-year publication summary
|
0
|
4
|
2
|
3
|
13
|
18
|
65
|
109
|
153
|
54
|
| 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 |
61 |
| Celgard, LLC | 273 |
36 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
28 |
| Contemporary Amperex Technology Co., Limited | 5805 |
12 |
| NGK Insulators, Ltd. | 4589 |
11 |
| Daramic, LLC | 207 |
11 |
| Sumitomo Chemical Company, Limited | 8808 |
10 |
| LG Chem, Ltd. | 17205 |
8 |
| Ningde Amperex Technology Limited | 1512 |
8 |
| SK Innovation Co., Ltd. | 1015 |
8 |
| SK IE Technology Co., Ltd. | 152 |
8 |
| GM Global Technology Operations LLC | 13620 |
7 |
| Samsung SDI Co., Ltd. | 6671 |
7 |
| GS Yuasa International Ltd. | 1834 |
7 |
| Teijin Limited | 1216 |
7 |
| Prime Planet Energy & Solutions, Inc. | 559 |
6 |
| Toyota Motor Corporation | 28582 |
5 |
| Toray Industries, Inc. | 6652 |
5 |
| Shanghai Energy New Materials Technology Co., Ltd. | 86 |
5 |
| Samsung Electronics Co., Ltd. | 131630 |
4 |
| Other owners | 204 |