- All sections
- H - Electricity
- H01T - Spark gapsovervoltage arresters using spark gapssparking plugscorona devicesgenerating ions to be introduced into non-enclosed gases
- H01T 15/00 - Circuits specially adapted for spark gaps, e.g. ignition circuits
Patent holdings for IPC class H01T 15/00
Total number of patents in this class: 161
10-year publication summary
|
24
|
30
|
21
|
11
|
9
|
7
|
8
|
4
|
7
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denso Corporation | 24146 |
12 |
| Mitsubishi Electric Corporation | 45860 |
10 |
| Semiconductor Components Industries, L.L.C. | 5253 |
9 |
| NGK Spark Plug Co., Ltd. | 895 |
8 |
| TDK Electronics AG | 929 |
7 |
| Rohm Co., Ltd. | 6410 |
5 |
| Fuji Electric Co., Ltd. | 5114 |
5 |
| DEHN + SÖHNE GmbH + Co. KG | 126 |
5 |
| Imagineering, Inc. | 125 |
5 |
| Marshall Electric Corporation | 15 |
5 |
| Epcos AG | 704 |
4 |
| General Electric Company | 13830 |
3 |
| NGK Insulators, Ltd. | 4929 |
3 |
| Board of Trustees of Michigan State University | 1178 |
3 |
| State Grid Corporation of China | 1360 |
3 |
| Wilmington Trust, National Association, AS Co-collateral Trustee, Successor Collateral Trustee | 321 |
3 |
| Robert Bosch GmbH | 42505 |
2 |
| BorgWarner BERU Systems GmbH | 47 |
2 |
| China Electric Power Research Institute | 268 |
2 |
| Cummins Inc. | 2558 |
2 |
| Other owners | 63 |