- All sections
- G - Physics
- G01R - Measuring electric variables; measuring magnetic variables
- G01R 19/20 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of dc into ac, e.g. with choppers using transductors
Patent holdings for IPC class G01R 19/20
Total number of patents in this class: 51
10-year publication summary
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2
|
1
|
3
|
1
|
1
|
3
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0
|
1
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1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24565 |
4 |
| Lem International SA | 117 |
3 |
| Airbus Operations S.A.S. | 2447 |
2 |
| Nissan Motor Co., Ltd. | 12352 |
2 |
| Fisher Controls International LLC | 1515 |
2 |
| Schneider Electric USA, Inc. | 1267 |
2 |
| Vacuumschmelze GmbH & Co. KG | 263 |
2 |
| Hitachi Energy Ltd. | 2232 |
2 |
| General Electric Company | 17789 |
1 |
| 3m Innovative Properties Company | 17957 |
1 |
| Texas Instruments Incorporated | 19432 |
1 |
| Robert Bosch GmbH | 41786 |
1 |
| Murata Manufacturing Co., Ltd. | 23702 |
1 |
| TDK Corporation | 6539 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 29733 |
1 |
| California Institute of Technology | 3936 |
1 |
| ABB S.p.A. | 450 |
1 |
| ABB Schweiz AG | 6632 |
1 |
| Bosch GmbH | 2 |
1 |
| Canon Denshi Kabushiki Kaisha | 179 |
1 |
| Other owners | 20 |