- 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 19/04 - Devices providing for corona discharge having pointed electrodes
Patent holdings for IPC class H01T 19/04
Total number of patents in this class: 359
10-year publication summary
|
32
|
40
|
29
|
35
|
27
|
20
|
18
|
11
|
15
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18957 |
83 |
| Sharp Corporation | 10015 |
14 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
12 |
| Illinois Tool Works Inc. | 11152 |
11 |
| Murata Manufacturing Co., Ltd. | 22355 |
9 |
| Tenneco Inc | 274 |
9 |
| Daikin Industries, Ltd. | 9495 |
8 |
| Hugle Electronics Inc. | 21 |
7 |
| Panasonic Corporation | 20786 |
6 |
| Denso Corporation | 23338 |
6 |
| Koganei Corporation | 209 |
6 |
| Wilmington Trust, National Association, AS Co-collateral Trustee, Successor Collateral Trustee | 345 |
6 |
| 3m Innovative Properties Company | 18406 |
5 |
| Katano Kogyo Co., Ltd. | 9 |
5 |
| Panasonic Industrial Devices SUNX Co., Ltd. | 57 |
5 |
| LG Electronics Inc. | 69257 |
4 |
| BorgWarner Ludwigsburg GmbH | 109 |
4 |
| Nuctech Company Limited | 1275 |
4 |
| SMC Corporation | 1354 |
4 |
| Soken Inc. | 211 |
4 |
| Other owners | 147 |