- All sections
- H - Electricity
- H01T - Spark gaps; overvoltage arresters using spark gaps; sparking plugs; corona devices; generating 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: 153
10-year publication summary
|
23
|
24
|
30
|
21
|
11
|
9
|
7
|
6
|
4
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denso Corporation | 23338 |
11 |
| Mitsubishi Electric Corporation | 43934 |
10 |
| Semiconductor Components Industries, L.L.C. | 5345 |
8 |
| NGK Spark Plug Co., Ltd. | 935 |
8 |
| TDK Electronics AG | 863 |
7 |
| Fuji Electric Co., Ltd. | 4750 |
6 |
| Rohm Co., Ltd. | 5843 |
5 |
| DEHN + SÖHNE GmbH + Co. KG | 133 |
5 |
| Imagineering, Inc. | 125 |
5 |
| Marshall Electric Corporation | 15 |
5 |
| Epcos AG | 778 |
4 |
| General Electric Company | 18133 |
3 |
| NGK Insulators, Ltd. | 4589 |
3 |
| Board of Trustees of Michigan State University | 1141 |
3 |
| State Grid Corporation of China | 1308 |
3 |
| Wilmington Trust, National Association, AS Co-collateral Trustee, Successor Collateral Trustee | 345 |
3 |
| Robert Bosch GmbH | 40953 |
2 |
| Alstom Technology Ltd | 1196 |
2 |
| BorgWarner BERU Systems GmbH | 48 |
2 |
| China Electric Power Research Institute | 232 |
2 |
| Other owners | 56 |