- 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: 79
10-year publication summary
|
2
|
5
|
9
|
5
|
4
|
3
|
3
|
5
|
3
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hon Hai Precision Industry Co., Ltd. | 4013 |
7 |
| Tsinghua University | 6238 |
7 |
| Pioneer Corporation | 3765 |
6 |
| Elbit Systems of America, LLC | 179 |
4 |
| Pioneer Micro Technology Corporation | 57 |
4 |
| Electronics and Telecommunications Research Institute | 9697 |
3 |
| Dymenso LLC | 4 |
3 |
| Triad National Security, LLC | 637 |
3 |
| Huawei Technologies Co., Ltd. | 124379 |
2 |
| Colorado State University Research Foundation | 724 |
2 |
| Fuzhou University | 341 |
2 |
| Canon Kabushiki Kaisha | 7369 |
2 |
| L3Harris Technologies, Inc. | 362 |
2 |
| Freemelt AB | 44 |
2 |
| Photonics West, LLC | 22 |
2 |
| E. I. du Pont de Nemours and Company | 3473 |
1 |
| Panasonic Corporation | 18809 |
1 |
| Sharp Corporation | 10847 |
1 |
| ASML Netherlands B.V. | 7987 |
1 |
| California Institute of Technology | 4037 |
1 |
| Other owners | 23 |