- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 29/04 - Cathodes
Patent holdings for IPC class H01J 29/04
Total number of patents in this class: 86
10-year publication summary
|
12
|
4
|
2
|
5
|
9
|
5
|
4
|
3
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pioneer Corporation | 4843 |
9 |
| Hon Hai Precision Industry Co., Ltd. | 4157 |
7 |
| Tsinghua University | 5426 |
7 |
| NGK Insulators, Ltd. | 4589 |
4 |
| Elbit Systems of America, LLC | 194 |
4 |
| Pioneer Micro Technology Corporation | 59 |
4 |
| Electronics and Telecommunications Research Institute | 8830 |
3 |
| Dymenso LLC | 4 |
3 |
| Triad National Security, LLC | 580 |
3 |
| Canon Kabushiki Kaisha | 6884 |
3 |
| Colorado State University Research Foundation | 675 |
2 |
| Fuzhou University | 262 |
2 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
2 |
| EOTech, LLC | 82 |
2 |
| General Electric Company | 18133 |
1 |
| E. I. du Pont de Nemours and Company | 4345 |
1 |
| Panasonic Corporation | 20786 |
1 |
| Sharp Corporation | 10015 |
1 |
| Industrial Technology Research Institute | 4898 |
1 |
| Nikon Corporation | 7162 |
1 |
| Other owners | 25 |