- 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: 1135
10-year publication summary
|
80
|
87
|
70
|
69
|
78
|
63
|
56
|
46
|
55
|
26
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 19066 |
54 |
| Samsung SDI Co., Ltd. | 10624 |
38 |
| NGK Insulators, Ltd. | 5239 |
31 |
| Toyota Motor Corporation | 35813 |
29 |
| Sumitomo Metal Mining Co., Ltd. | 1978 |
27 |
| Panasonic Corporation | 18962 |
20 |
| Duracell U.S. Operations, Inc. | 391 |
17 |
| Contemporary Amperex Technology Co., Limited | 10003 |
17 |
| TDK Corporation | 6876 |
16 |
| Tanaka Chemical Corporation | 142 |
16 |
| HHeLi, LLC | 75 |
16 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12378 |
16 |
| The Regents of the University of California | 20778 |
15 |
| Sumitomo Chemical Company, Limited | 8968 |
15 |
| Umicore | 775 |
15 |
| Honeycomb Battery Company | 407 |
15 |
| LG Chem, Ltd. | 17929 |
14 |
| Siemens AG | 24020 |
13 |
| Panasonic Intellectual Property Management Co., Ltd. | 34035 |
13 |
| GS Yuasa International Ltd. | 2251 |
13 |
| Other owners | 725 |