- 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: 1145
10-year publication summary
|
73
|
79
|
85
|
69
|
67
|
71
|
57
|
50
|
45
|
31
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 15163 |
54 |
| Samsung SDI Co., Ltd. | 8412 |
34 |
| NGK Insulators, Ltd. | 4973 |
29 |
| Sumitomo Chemical Company, Limited | 9047 |
27 |
| Toyota Motor Corporation | 32542 |
26 |
| Panasonic Corporation | 20085 |
26 |
| Sumitomo Metal Mining Co., Ltd. | 1780 |
22 |
| LG Chem, Ltd. | 17641 |
20 |
| Duracell U.S. Operations, Inc. | 416 |
16 |
| Tanaka Chemical Corporation | 145 |
16 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12781 |
16 |
| The Regents of the University of California | 19989 |
15 |
| Sanyo Electric Co., Ltd. | 3678 |
15 |
| GS Yuasa International Ltd. | 2050 |
15 |
| Umicore | 651 |
15 |
| Honeycomb Battery Company | 388 |
15 |
| TDK Corporation | 6782 |
14 |
| HHeLi, LLC | 69 |
14 |
| Siemens AG | 24437 |
13 |
| Panasonic Intellectual Property Management Co., Ltd. | 31598 |
13 |
| Other owners | 730 |