Patent Theme
Advanced Circuit Protection
Devices and systems designed to protect electrical circuits from overcurrents, short circuits, and other faults, often involving rapid response, high voltage/current handling, and sophisticated interruption mechanisms.
5,058 US filings from 1,120 companies since 2023 · 2023: 1,277 · 2024: 1,566 · 2025: 1,539 · 2026 YTD: 676
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Top companies
Ranked by filings in this theme since 2023. 2026 is partial.
| # | Company | Since 2023 | 2023 | 2024 | 2025 | 2026 YTD | YoY |
|---|
| 1 | Eaton Intelligent Power Limited | 275 | 96 | 79 | 74 | 26 | -6.3% |
| 2 | LS ELECTRIC CO., LTD. | 170 | 41 | 62 | 52 | 15 | -16.1% |
| 3 | ABB Schweiz AG | 154 | 47 | 37 | 42 | 28 | +13.5% |
| 4 | Siemens Aktiengesellschaft | 119 | 21 | 48 | 36 | 14 | -25.0% |
| 5 | Schneider Electric Industries SAS | 115 | 15 | 36 | 40 | 24 | +11.1% |
| 6 | Hubbell Incorporated | 104 | 30 | 30 | 36 | 8 | +20.0% |
| 7 | TEXAS INSTRUMENTS INCORPORATED | 91 | 22 | 33 | 23 | 13 | -30.3% |
| 8 | SCHNEIDER ELECTRIC USA, INC. | 77 | 24 | 19 | 18 | 16 | -5.3% |
| 9 | Mitsubishi Electric Corporation | 68 | 20 | 27 | 17 | 4 | -37.0% |
| 10 | Littelfuse, Inc. | 67 | 19 | 23 | 18 | 7 | -21.7% |
| 11 | HITACHI ENERGY LTD | 60 | · | 17 | 26 | 17 | +52.9% |
| 12 | Panasonic Intellectual Property Management Co., Ltd. | 60 | 13 | 22 | 16 | 9 | -27.3% |
| 13 | ROHM CO., LTD. | 54 | 13 | 26 | 10 | 5 | -61.5% |
| 14 | Huawei Digital Power Technologies Co., Ltd. | 49 | 17 | 13 | 15 | 4 | +15.4% |
| 15 | Siemens Industry, Inc. | 48 | 9 | 11 | 21 | 7 | +90.9% |
| 16 | S&C Electric Company | 43 | 11 | 13 | 12 | 7 | -7.7% |
| 17 | DEXERIALS CORPORATION | 42 | 5 | 13 | 18 | 6 | +38.5% |
| 18 | SIEMENS ENERGY GLOBAL GMBH & CO. KG | 42 | 13 | 16 | 4 | 9 | -75.0% |
| 19 | Xiamen Hongfa Electric Power Controls Co., Ltd. | 42 | 6 | 20 | 6 | 10 | -70.0% |
| 20 | Infineon Technologies AG | 41 | 15 | 6 | 13 | 7 | +116.7% |
| 21 | HAMILTON SUNDSTRAND CORPORATION | 40 | 12 | 12 | 14 | 2 | +16.7% |
| 22 | Sumitomo Wiring Systems, Ltd. | 39 | 5 | 10 | 16 | 8 | +60.0% |
| 23 | FUJI ELECTRIC CO., LTD. | 38 | 10 | 11 | 12 | 5 | +9.1% |
| 24 | Leviton Manufacturing Co., Inc. | 37 | 13 | 8 | 12 | 4 | +50.0% |
| 25 | AutoNetworks Technologies, Ltd. | 36 | 3 | 9 | 16 | 8 | +77.8% |