- All sections
- G - Physics
- G21K - Techniques for handling particles or ionising radiation not otherwise provided forirradiation devicesgamma ray or x-ray microscopes
- G21K 1/04 - Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers
Patent holdings for IPC class G21K 1/04
Total number of patents in this class: 573
10-year publication summary
|
57
|
60
|
51
|
28
|
44
|
41
|
30
|
30
|
25
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shanghai United Imaging Healthcare Co., Ltd. | 1869 |
28 |
| Koninklijke Philips N.V. | 24610 |
25 |
| Elekta AB (Publ) | 300 |
22 |
| Varian Medical Systems, Inc. | 860 |
20 |
| GE Precision Healthcare LLC | 5423 |
17 |
| Accuray Incorporated | 385 |
16 |
| Viken Detection Corporation | 62 |
14 |
| Elekta Limited | 208 |
12 |
| Rapiscan Systems, Inc. | 293 |
12 |
| Hologic, Inc. | 1117 |
11 |
| Nuctech Company Limited | 1381 |
11 |
| Siemens Healthineers AG | 6597 |
11 |
| Deutsches Krebsforschungszentrum | 418 |
10 |
| RefleXion Medical, Inc. | 152 |
10 |
| Siemens Healthineers International AG | 535 |
10 |
| Mevion Medical Systems, Inc. | 106 |
9 |
| ControlRad Systems, Inc. | 30 |
8 |
| Toshiba Medical Systems Corporation | 2127 |
7 |
| Tsinghua University | 5842 |
7 |
| American Science and Engineering, Inc. | 105 |
7 |
| Other owners | 306 |