- All sections
- G - Physics
- G01R - Measuring electric variablesmeasuring magnetic variables
- G01R 27/20 - Measuring earth resistanceMeasuring contact resistance of earth connections, e.g. plates
Patent holdings for IPC class G01R 27/20
Total number of patents in this class: 202
10-year publication summary
|
10
|
11
|
17
|
14
|
13
|
18
|
16
|
15
|
16
|
17
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Omicron Electronics GmbH | 275 |
9 |
| International Business Machines Corporation | 61734 |
6 |
| RENAULT s.a.s. | 5455 |
5 |
| Toyota Motor Corporation | 33378 |
4 |
| Infineon Technologies AG | 8279 |
4 |
| Fluke Corporation | 979 |
4 |
| Samsung Display Co., Ltd. | 36165 |
3 |
| Siemens AG | 24337 |
3 |
| Robert Bosch GmbH | 43034 |
3 |
| ZTE Corporation | 43019 |
3 |
| San Diego Gas & Electric Company | 64 |
3 |
| HP Indigo B.V. | 529 |
3 |
| Siemens Gamesa Renewable Energy A/S | 1909 |
3 |
| Changxin Memory Technologies, Inc. | 4928 |
3 |
| DYNAenergetics Europe GmbH | 257 |
3 |
| Dehn SE | 167 |
3 |
| Eaton Corporation | 1813 |
2 |
| Centre National de La Recherche Scientifique | 10666 |
2 |
| Allegro Microsystems, LLC | 1372 |
2 |
| AMAD Mennekes Holding GmbH & Co. KG | 67 |
2 |
| Other owners | 132 |