- All sections
- G - Physics
- G01R - Measuring electric variables; measuring magnetic variables
- G01R 27/20 - Measuring earth resistance; Measuring contact resistance of earth connections, e.g. plates
Patent holdings for IPC class G01R 27/20
Total number of patents in this class: 178
10-year publication summary
|
14
|
10
|
11
|
17
|
15
|
13
|
19
|
18
|
15
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Omicron Electronics GmbH | 259 |
7 |
| RENAULT s.a.s. | 5674 |
7 |
| Fluke Corporation | 921 |
4 |
| Samsung Display Co., Ltd. | 30585 |
3 |
| International Business Machines Corporation | 60644 |
3 |
| Toyota Motor Corporation | 28582 |
3 |
| ZTE Corporation | 39218 |
3 |
| San Diego Gas & Electric Company | 66 |
3 |
| HP Indigo B.V. | 540 |
3 |
| Siemens Gamesa Renewable Energy A/S | 1647 |
3 |
| Changxin Memory Technologies, Inc. | 4732 |
3 |
| DYNAenergetics Europe GmbH | 205 |
3 |
| Siemens AG | 24990 |
2 |
| Eaton Corporation | 1839 |
2 |
| Centre National de La Recherche Scientifique | 9632 |
2 |
| Robert Bosch GmbH | 40953 |
2 |
| Infineon Technologies AG | 8189 |
2 |
| Allegro Microsystems, LLC | 1206 |
2 |
| AMAD Mennekes Holding GmbH & Co. KG | 69 |
2 |
| Eldor Corporation S.p.A. | 117 |
2 |
| Other owners | 117 |