- 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: 1148
10-year publication summary
|
73
|
79
|
85
|
69
|
67
|
72
|
58
|
50
|
45
|
41
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Energy Solution, Ltd. | 15763 |
53 |
| Samsung SDI Co., Ltd. | 9032 |
36 |
| NGK Insulators, Ltd. | 5137 |
31 |
| Sumitomo Chemical Company, Limited | 9110 |
27 |
| Toyota Motor Corporation | 33378 |
26 |
| Panasonic Corporation | 19969 |
26 |
| Sumitomo Metal Mining Co., Ltd. | 1793 |
22 |
| LG Chem, Ltd. | 17682 |
19 |
| Duracell U.S. Operations, Inc. | 407 |
16 |
| Tanaka Chemical Corporation | 148 |
16 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12680 |
16 |
| The Regents of the University of California | 20268 |
15 |
| GS Yuasa International Ltd. | 2095 |
15 |
| Umicore | 681 |
15 |
| Honeycomb Battery Company | 393 |
15 |
| TDK Corporation | 6887 |
14 |
| HHeLi, LLC | 70 |
14 |
| Siemens AG | 24337 |
13 |
| Panasonic Intellectual Property Management Co., Ltd. | 32352 |
13 |
| Sanyo Electric Co., Ltd. | 3606 |
12 |
| Other owners | 734 |