- All sections
- H - Electricity
- H01M - Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy
- H01M 4/52 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
Patent holdings for IPC class H01M 4/52
Total number of patents in this class: 1139
10-year publication summary
|
80
|
87
|
70
|
69
|
79
|
63
|
56
|
46
|
55
|
30
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 19305 |
54 |
| Samsung SDI Co., Ltd. | 10745 |
38 |
| NGK Insulators, Ltd. | 5173 |
31 |
| Toyota Motor Corporation | 35992 |
30 |
| Sumitomo Metal Mining Co., Ltd. | 1991 |
27 |
| Panasonic Corporation | 18809 |
20 |
| Duracell U.S. Operations, Inc. | 390 |
17 |
| Contemporary Amperex Technology Co., Limited | 10270 |
17 |
| TDK Corporation | 6927 |
16 |
| Tanaka Chemical Corporation | 148 |
16 |
| HHeLi, LLC | 76 |
16 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12331 |
16 |
| The Regents of the University of California | 20842 |
15 |
| Panasonic Intellectual Property Management Co., Ltd. | 34335 |
15 |
| Sumitomo Chemical Company, Limited | 8969 |
15 |
| Umicore | 776 |
15 |
| Honeycomb Battery Company | 407 |
15 |
| LG Chem, Ltd. | 17956 |
14 |
| Siemens AG | 23983 |
13 |
| GS Yuasa International Ltd. | 2274 |
13 |
| Other owners | 726 |