- All sections
- H - Electricity
- H01T - Spark gapsovervoltage arresters using spark gapssparking plugscorona devicesgenerating ions to be introduced into non-enclosed gases
- H01T 13/52 - Sparking plugs characterised by a discharge along a surface
Patent holdings for IPC class H01T 13/52
Total number of patents in this class: 66
10-year publication summary
|
3
|
6
|
9
|
9
|
2
|
1
|
2
|
2
|
4
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denso Corporation | 25513 |
10 |
| Niterra Co., Ltd. | 1399 |
8 |
| NGK Spark Plug Co., Ltd. | 875 |
6 |
| Federal-Mogul Ignition GmbH | 55 |
4 |
| Wilmington Trust, National Association, AS Co-collateral Trustee, Successor Collateral Trustee | 114 |
4 |
| General Electric Company | 13888 |
3 |
| Federal-Mogul Ignition Company | 94 |
3 |
| Safran Aircraft Engines | 6671 |
3 |
| Bayerische Motoren Werke Aktiengesellschaft | 15252 |
2 |
| Champion Aerospace LLC | 30 |
2 |
| Chentronics, LLC | 7 |
2 |
| North-West University | 54 |
2 |
| Unison Industries, LLC | 216 |
2 |
| Green Lightning Solutions, LLC | 7 |
2 |
| Siemens AG | 24033 |
1 |
| Pratt & Whitney Canada Corp. | 5472 |
1 |
| GM Global Technology Operations LLC | 16106 |
1 |
| NGK Insulators, Ltd. | 5232 |
1 |
| Imagineering, Inc. | 125 |
1 |
| Knite, Inc. | 2 |
1 |
| Other owners | 7 |