- All sections
- G - Physics
- G21K - Techniques for handling particles or ionising radiation not otherwise provided for; irradiation devices; gamma ray or x-ray microscopes
- G21K 4/00 - Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens
Patent holdings for IPC class G21K 4/00
Total number of patents in this class: 602
10-year publication summary
|
51
|
56
|
44
|
44
|
34
|
26
|
29
|
11
|
16
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Konica Minolta Medical & Graphic, Inc. | 986 |
103 |
| Hamamatsu Photonics K.K. | 4161 |
59 |
| Toray Industries, Inc. | 6652 |
34 |
| FUJIFILM Corporation | 27102 |
21 |
| Toshiba Materials Co., Ltd. | 600 |
21 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
21 |
| Konica Minolta, Inc. | 8349 |
15 |
| Luxium Solutions, LLC | 90 |
14 |
| Canon Kabushiki Kaisha | 6884 |
12 |
| Hitachi Metals, Ltd. | 2175 |
10 |
| Koninklijke Philips N.V. | 22975 |
9 |
| Siemens Medical Solutions USA, Inc. | 1584 |
9 |
| Toshiba Electron Tubes & Devices Co., Ltd. | 56 |
9 |
| Carestream Dental Technology Topco Limited | 98 |
9 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
8 |
| Mitsubishi Chemical Corporation | 4313 |
8 |
| University of Tennessee Research Foundation | 727 |
8 |
| Toshiba Corporation | 12017 |
6 |
| Carestream Health, Inc. | 728 |
6 |
| Tohoku University | 2526 |
6 |
| Other owners | 214 |