- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 1/16 - Cathodes heated directly by an electric current characterised by the shape
Patent holdings for IPC class H01J 1/16
Total number of patents in this class: 61
10-year publication summary
|
7
|
3
|
2
|
4
|
0
|
3
|
1
|
3
|
5
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denka Company Limited | 2600 |
5 |
| Hamamatsu Photonics K.K. | 4446 |
3 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 625 |
3 |
| Siemens Healthineers AG | 6740 |
3 |
| Hitachi High-Technologies Corporation | 2002 |
2 |
| Lockheed Martin Corporation | 3274 |
2 |
| Applied Physics Technologies, Inc. | 14 |
2 |
| Arcam AB | 202 |
2 |
| Hitachi Zosen Corporation | 615 |
2 |
| Rad Source Technologies, Inc. | 16 |
2 |
| Rapiscan Systems, Inc. | 291 |
2 |
| Varex Imaging Corporation | 305 |
2 |
| GE Precision Healthcare LLC | 5504 |
2 |
| Engeniusmicro, LLC | 4 |
2 |
| Qualcomm Incorporated | 86346 |
1 |
| General Electric Company | 13845 |
1 |
| Schlumberger Technology Corporation | 10868 |
1 |
| Schlumberger Canada Limited | 7363 |
1 |
| Schlumberger Technology B.v. | 5187 |
1 |
| Schlumberger Holdings Limited | 2808 |
1 |
| Other owners | 21 |