- All sections
- H - Electricity
- H01T - Spark gapsovervoltage arresters using spark gapssparking plugscorona devicesgenerating ions to be introduced into non-enclosed gases
- H01T 13/38 - Selection of materials for insulation
Patent holdings for IPC class H01T 13/38
Total number of patents in this class: 113
10-year publication summary
|
13
|
20
|
9
|
7
|
3
|
4
|
5
|
8
|
1
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Niterra Co., Ltd. | 1417 |
26 |
| NGK Spark Plug Co., Ltd. | 872 |
16 |
| Robert Bosch GmbH | 44252 |
10 |
| Denso Corporation | 25676 |
10 |
| Federal-Mogul Ignition Company | 94 |
7 |
| Federal-Mogul Ignition LLC | 126 |
6 |
| EcoPower Spark, LLC | 16 |
4 |
| Tenneco Inc | 51 |
3 |
| Federal-Mogul Motorparts LLC | 603 |
3 |
| PGI Northstar LLC | 398 |
3 |
| Ford Global Technologies, LLC | 21582 |
2 |
| FRAM Group IP LLC | 75 |
2 |
| Rosenberger Hochfrequenztechnik GmbH & Co. KG | 694 |
2 |
| Safran Aircraft Engines | 6741 |
2 |
| Wilmington Trust, National Association, AS Co-collateral Trustee, Successor Collateral Trustee | 112 |
2 |
| General Electric Company | 13938 |
1 |
| The Boeing Company | 20196 |
1 |
| Hyundai Motor Company | 24852 |
1 |
| BERU AG | 17 |
1 |
| Knite, Inc. | 2 |
1 |
| Other owners | 10 |