- All sections
- H - Electricity
- H02H - Emergency protective circuit arrangements
- H02H 9/02 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
Patent holdings for IPC class H02H 9/02
Total number of patents in this class: 1755
10-year publication summary
|
141
|
127
|
143
|
154
|
150
|
131
|
127
|
114
|
103
|
57
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24477 |
37 |
| Texas Instruments Incorporated | 19460 |
33 |
| ABB Schweiz AG | 6976 |
33 |
| Varian Semiconductor Equipment Associates, Inc. | 1231 |
32 |
| Mitsubishi Electric Corporation | 46127 |
27 |
| Rohm Co., Ltd. | 6459 |
25 |
| Eaton Intelligent Power Limited | 5989 |
25 |
| Littelfuse, Inc. | 793 |
24 |
| Hamilton Sundstrand Corporation | 4881 |
21 |
| Huawei Technologies Co., Ltd. | 112690 |
18 |
| Infineon Technologies AG | 8225 |
17 |
| Polytronics Technology Corp. | 84 |
16 |
| Sumitomo Electric Industries, Ltd. | 15495 |
15 |
| Hitachi Energy Ltd. | 2227 |
15 |
| Rolls-Royce PLC | 3102 |
14 |
| Infineon Technologies Austria AG | 2152 |
12 |
| Yazaki Corporation | 6692 |
12 |
| Fuji Electric Co., Ltd. | 5148 |
12 |
| Semiconductor Components Industries, L.L.C. | 5249 |
11 |
| Sumitomo Wiring Systems, Ltd. | 10363 |
11 |
| Other owners | 1345 |