- All sections
- H - Electricity
- H01T - Spark gapsovervoltage arresters using spark gapssparking plugscorona devicesgenerating ions to be introduced into non-enclosed gases
- H01T 13/39 - Selection of materials for electrodes
Patent holdings for IPC class H01T 13/39
Total number of patents in this class: 399
10-year publication summary
|
41
|
31
|
25
|
25
|
15
|
18
|
25
|
18
|
16
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Niterra Co., Ltd. | 1356 |
111 |
| NGK Spark Plug Co., Ltd. | 884 |
59 |
| Robert Bosch GmbH | 43365 |
41 |
| Denso Corporation | 25032 |
28 |
| Federal-Mogul Ignition GmbH | 55 |
28 |
| Wilmington Trust, National Association, AS Co-collateral Trustee, Successor Collateral Trustee | 117 |
17 |
| Federal-Mogul Ignition LLC | 119 |
13 |
| Federal-Mogul Ignition Company | 94 |
12 |
| EcoPower Spark, LLC | 16 |
11 |
| Tanaka Kikinzoku Kogyo K.K. | 573 |
9 |
| Sumitomo Electric Industries, Ltd. | 15994 |
6 |
| Caterpillar Inc. | 10013 |
5 |
| DKT Verwaltungs-GmbH | 15 |
5 |
| Johnson Matthey Public Limited Company | 1733 |
5 |
| Innio Jenbacher GmbH & Co og | 285 |
5 |
| Federal-Mogul Corporation | 278 |
3 |
| Hitachi Metals, Ltd. | 1933 |
2 |
| NGK Insulators, Ltd. | 5211 |
2 |
| Caterpillar Energy Solutions GmbH | 148 |
2 |
| Imagineering, Inc. | 125 |
2 |
| Other owners | 33 |