- All sections
- H - Electricity
- H01T - Spark gapsovervoltage arresters using spark gapssparking plugscorona devicesgenerating 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: 372
10-year publication summary
|
40
|
29
|
35
|
26
|
20
|
18
|
11
|
15
|
18
|
10
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18679 |
83 |
| Sharp Corporation | 10293 |
16 |
| Panasonic Intellectual Property Management Co., Ltd. | 32139 |
13 |
| Illinois Tool Works Inc. | 11520 |
12 |
| Murata Manufacturing Co., Ltd. | 24861 |
8 |
| Daikin Industries, Ltd. | 10118 |
8 |
| Federal-Mogul Motorparts LLC | 431 |
8 |
| Federal-Mogul Ignition LLC | 80 |
8 |
| Panasonic Corporation | 20012 |
6 |
| Denso Corporation | 24601 |
6 |
| Katano Kogyo Co., Ltd. | 10 |
5 |
| Koganei Corporation | 212 |
5 |
| 3m Innovative Properties Company | 17755 |
4 |
| LG Electronics Inc. | 73763 |
4 |
| KEYENCE Corporation | 464 |
4 |
| Nuctech Company Limited | 1426 |
4 |
| Panasonic Industrial Devices SUNX Co., Ltd. | 40 |
4 |
| SMC Corporation | 1367 |
4 |
| Soken Inc. | 219 |
4 |
| Tadiran Consumer and Technology Products Ltd | 14 |
4 |
| Other owners | 162 |