- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 21/10 - Tubes with a single discharge path having electrostatic control means only with one or more immovable internal control electrodes, e.g. triode, pentode, octode
Patent holdings for IPC class H01J 21/10
Total number of patents in this class: 45
10-year publication summary
|
4
|
10
|
5
|
6
|
6
|
7
|
3
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| International Business Machines Corporation | 60644 |
8 |
| STMicroelectronics S.r.l. | 3693 |
4 |
| STMicroelectronics, Inc. | 886 |
3 |
| Evince Technology Limited | 10 |
3 |
| British Telecommunications Public Limited Company | 2575 |
2 |
| Hon Hai Precision Industry Co., Ltd. | 4157 |
2 |
| Tsinghua University | 5426 |
2 |
| Noritake Co., Limited | 224 |
2 |
| Noritake Itron Corporation | 27 |
2 |
| Micron Technology, Inc. | 24960 |
1 |
| Electronics and Telecommunications Research Institute | 8830 |
1 |
| California Institute of Technology | 3884 |
1 |
| Thales SA | 2318 |
1 |
| Hamamatsu Photonics K.K. | 4161 |
1 |
| Advanced Fusion Systems LLC | 66 |
1 |
| Carbon Design Innovations, Inc. | 8 |
1 |
| Elbit Systems of America, LLC | 194 |
1 |
| HRL Laboratories, LLC | 1588 |
1 |
| Korg Inc. | 68 |
1 |
| SELEX ES S.p.A. | 42 |
1 |
| Other owners | 6 |