- All sections
- G - Physics
- G01R - Measuring electric variablesmeasuring magnetic variables
- G01R 33/421 - Screening of main or gradient magnetic field
Patent holdings for IPC class G01R 33/421
Total number of patents in this class: 237
10-year publication summary
|
11
|
13
|
24
|
22
|
26
|
20
|
23
|
13
|
15
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Koninklijke Philips N.V. | 24804 |
25 |
| Hyperfine Operations, Inc. | 179 |
22 |
| Siemens Healthineers AG | 6679 |
18 |
| ViewRay Systems, Inc. | 104 |
13 |
| Siemens Healthcare Limited | 140 |
11 |
| FUJIFILM Corporation | 29399 |
10 |
| Aspect Imaging Ltd. | 136 |
9 |
| Synaptive Medical Inc. | 593 |
8 |
| Toshiba Medical Systems Corporation | 2123 |
6 |
| Shanghai United Imaging Healthcare Co., Ltd. | 1914 |
6 |
| GE Precision Healthcare LLC | 5466 |
5 |
| Koninklijke Philips Electronics N.V. | 9618 |
4 |
| Institute of Electrical Engineering, Chinese Academy of Sciences | 78 |
4 |
| Genetesis, Inc. | 30 |
4 |
| Bruker Switzerland AG | 156 |
4 |
| TDK Corporation | 6748 |
3 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10912 |
3 |
| GE Medical Systems Global Technology Company, LLC | 251 |
3 |
| Korea Research Institute of Standards and Science | 675 |
3 |
| Magnetica Limited | 7 |
3 |
| Other owners | 73 |