Patent Theme
Lithium Battery Cathode Materials
Focuses on the composition, crystal structure, and synthesis methods of positive electrode active materials for rechargeable lithium-ion batteries, often involving complex metal oxides of nickel, cobalt, manganese, and lithium.
16,315 US filings from 2,237 companies since 2023 · 2023: 3,412 · 2024: 5,175 · 2025: 5,237 · 2026 YTD: 2,491
Compounds Containing Metals
Top companies
Ranked by filings in this theme since 2023. 2026 is partial.
| # | Company | Since 2023 | 2023 | 2024 | 2025 | 2026 YTD | YoY |
|---|
| 1 | LG Energy Solution, Ltd. | 1,409 | 276 | 501 | 432 | 200 | -13.8% |
| 2 | Samsung SDI Co., Ltd. | 1,145 | 145 | 249 | 481 | 270 | +93.2% |
| 3 | Panasonic Intellectual Property Management Co., Ltd. | 774 | 192 | 297 | 195 | 90 | -34.3% |
| 4 | TOYOTA JIDOSHA KABUSHIKI KAISHA | 673 | 114 | 239 | 200 | 120 | -16.3% |
| 5 | SK On Co., Ltd. | 562 | 93 | 181 | 154 | 134 | -14.9% |
| 6 | Contemporary Amperex Technology Co., Limited | 551 | 166 | 231 | 77 | 77 | -66.7% |
| 7 | Ningde Amperex Technology Limited | 371 | 53 | 128 | 131 | 59 | +2.3% |
| 8 | CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED | 351 | · | 14 | 283 | 54 | +1921.4% |
| 9 | GM GLOBAL TECHNOLOGY OPERATIONS LLC | 292 | 72 | 88 | 101 | 31 | +14.8% |
| 10 | Prime Planet Energy & Solutions, Inc. | 242 | 40 | 87 | 71 | 44 | -18.4% |
| 11 | LG Chem, Ltd. | 219 | 66 | 76 | 55 | 22 | -27.6% |
| 12 | Murata Manufacturing Co., Ltd. | 206 | 42 | 68 | 69 | 27 | +1.5% |
| 13 | Hyundai Motor Company | 205 | 45 | 49 | 68 | 43 | +38.8% |
| 14 | Kia Corporation | 199 | 41 | 48 | 67 | 43 | +39.6% |
| 15 | Semiconductor Energy Laboratory Co., Ltd. | 172 | 58 | 47 | 51 | 16 | +8.5% |
| 16 | SK INNOVATION CO., LTD. | 170 | 43 | 47 | 44 | 36 | -6.4% |
| 17 | GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. | 165 | 32 | 96 | 28 | 9 | -70.8% |
| 18 | HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. | 163 | 30 | 97 | 28 | 8 | -71.1% |
| 19 | SAMSUNG ELECTRONICS CO., LTD. | 161 | 60 | 53 | 38 | 10 | -28.3% |
| 20 | ZHUHAI COSMX BATTERY CO., LTD. | 159 | 34 | 34 | 55 | 36 | +61.8% |
| 21 | SUMITOMO METAL MINING CO., LTD. | 151 | 38 | 46 | 39 | 28 | -15.2% |
| 22 | ECOPRO BM CO., LTD. | 133 | 30 | 30 | 49 | 24 | +63.3% |
| 23 | HONDA MOTOR CO., LTD. | 129 | 23 | 42 | 51 | 13 | +21.4% |
| 24 | Umicore | 127 | 22 | 39 | 54 | 12 | +38.5% |
| 25 | HUNAN BRUNP EV RECYCLING CO., LTD. | 113 | 26 | 60 | 19 | 8 | -68.3% |