- All sections
- H - Electricity
- H01T - Spark gapsovervoltage arresters using spark gapssparking plugscorona devicesgenerating ions to be introduced into non-enclosed gases
- H01T 4/12 - Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel hermetically sealed
Patent holdings for IPC class H01T 4/12
Total number of patents in this class: 222
10-year publication summary
|
24
|
28
|
16
|
9
|
6
|
6
|
1
|
1
|
11
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 24260 |
97 |
| TDK Electronics AG | 926 |
21 |
| Epcos AG | 711 |
20 |
| TDK Corporation | 6661 |
11 |
| Mitsubishi Materials Corporation | 2421 |
7 |
| Analog Devices International Unlimited Company | 1868 |
7 |
| DEHN + SÖHNE GmbH + Co. KG | 128 |
5 |
| Phoenix Contact GmbH & Co. KG | 2266 |
5 |
| Bourns, Inc. | 178 |
4 |
| Smart Electronics Inc. | 37 |
4 |
| Panasonic Corporation | 20188 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 30822 |
2 |
| Ajou University Industry-academic Cooperation Foundation | 1005 |
2 |
| Citel | 33 |
2 |
| Iskra Zascite D.O.O. | 8 |
2 |
| Okaya Electric Industries Co., Ltd. | 19 |
2 |
| Saltek s.r.o | 29 |
2 |
| Eaton Intelligent Power Limited | 5926 |
2 |
| CSD Co., Ltd. | 3 |
2 |
| Hakusan Mfg. Co., Ltd. | 3 |
2 |
| Other owners | 21 |