- 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: 162
10-year publication summary
|
24
|
29
|
20
|
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 | 24588 |
11 |
| Mitsubishi Electric Corporation | 46618 |
10 |
| Semiconductor Components Industries, L.L.C. | 5283 |
9 |
| NGK Spark Plug Co., Ltd. | 888 |
8 |
| TDK Electronics AG | 960 |
7 |
| Rohm Co., Ltd. | 6520 |
5 |
| Fuji Electric Co., Ltd. | 5220 |
5 |
| DEHN + SÖHNE GmbH + Co. KG | 125 |
5 |
| Imagineering, Inc. | 125 |
5 |
| Marshall Electric Corporation | 16 |
5 |
| Epcos AG | 688 |
4 |
| General Electric Company | 13856 |
3 |
| NGK Insulators, Ltd. | 5115 |
3 |
| Board of Trustees of Michigan State University | 1199 |
3 |
| State Grid Corporation of China | 1376 |
3 |
| Federal-Mogul Ignition LLC | 80 |
3 |
| Robert Bosch GmbH | 42861 |
2 |
| Hyundai Motor Company | 22484 |
2 |
| BorgWarner BERU Systems GmbH | 46 |
2 |
| China Electric Power Research Institute | 278 |
2 |
| Other owners | 65 |