- All sections
- H - Electricity
- H01C - Resistors
- H01C 3/20 - Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical, or toroidal winding wound on cylindrical or prismatic base
Patent holdings for IPC class H01C 3/20
Total number of patents in this class: 18
10-year publication summary
|
2
|
1
|
2
|
2
|
2
|
3
|
1
|
0
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| KOA Corporation | 415 |
5 |
| Xiamen Set Electronics Co., Ltd | 76 |
3 |
| China-epri Electric Power Engineering Co., Ltd | 34 |
1 |
| DBK David + Baader GmbH | 45 |
1 |
| First Resistor & Condenser Co., Ltd. | 1 |
1 |
| General Electric Technology GmbH | 1457 |
1 |
| State Grid Corporation of China | 1359 |
1 |
| State Grid Smart Grid Research Institute | 63 |
1 |
| Endress+Hauser SE+Co. KG | 506 |
1 |
| Xi'an Witt Electric Equipment Co., Ltd | 1 |
1 |
| AMP Devices, LLC | 2 |
1 |
| Coudoint | 2 |
1 |
| Other owners | 0 |