- 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: 1166
10-year publication summary
87
|
74
|
80
|
87
|
70
|
64
|
63
|
52
|
49
|
14
|
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 |
50 |
Sumitomo Chemical Company, Limited | 8808 |
36 |
Matsushita Electric Industrial Co., Ltd. | 4724 |
29 |
Samsung SDI Co., Ltd. | 6671 |
29 |
NGK Insulators, Ltd. | 4589 |
28 |
Panasonic Corporation | 20786 |
27 |
LG Chem, Ltd. | 17205 |
26 |
Toyota Motor Corporation | 28582 |
22 |
Sumitomo Metal Mining Co., Ltd. | 1670 |
21 |
TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
20 |
Duracell U.S. Operations, Inc. | 432 |
17 |
AGC Seimi Chemical Co., Ltd. | 71 |
16 |
The Regents of the University of California | 18943 |
15 |
Sanyo Electric Co., Ltd. | 3926 |
15 |
GS Yuasa International Ltd. | 1834 |
15 |
Tanaka Chemical Corporation | 138 |
15 |
Honeycomb Battery Company | 359 |
15 |
Umicore | 542 |
14 |
Siemens AG | 24990 |
13 |
HHeLi, LLC | 62 |
13 |
Other owners | 730 |