- 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: 55
10-year publication summary
|
7
|
7
|
3
|
2
|
3
|
0
|
4
|
1
|
3
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denka Company Limited | 2189 |
4 |
| General Electric Company | 18133 |
3 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 680 |
3 |
| Siemens Healthineers AG | 5714 |
3 |
| Schlumberger Technology Corporation | 9690 |
2 |
| Hitachi High-Technologies Corporation | 2034 |
2 |
| Lockheed Martin Corporation | 3406 |
2 |
| Hitachi Zosen Corporation | 609 |
2 |
| Rad Source Technologies, Inc. | 17 |
2 |
| Rapiscan Systems, Inc. | 300 |
2 |
| Varex Imaging Corporation | 294 |
2 |
| Qualcomm Incorporated | 76576 |
1 |
| Schlumberger Canada Limited | 6913 |
1 |
| Schlumberger Technology B.v. | 4951 |
1 |
| Schlumberger Holdings Limited | 2947 |
1 |
| Interdigital Patent Holdings, Inc. | 3652 |
1 |
| Hewlett-Packard Development Company, L.P. | 28538 |
1 |
| Motorola, Inc. | 2873 |
1 |
| Shimadzu Corporation | 5791 |
1 |
| Hamamatsu Photonics K.K. | 4161 |
1 |
| Other owners | 19 |