- 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: 80
10-year publication summary
|
4
|
2
|
5
|
8
|
5
|
4
|
3
|
3
|
5
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pioneer Corporation | 4301 |
8 |
| Hon Hai Precision Industry Co., Ltd. | 4024 |
7 |
| Tsinghua University | 5943 |
7 |
| Elbit Systems of America, LLC | 187 |
4 |
| Pioneer Micro Technology Corporation | 58 |
4 |
| Electronics and Telecommunications Research Institute | 9416 |
3 |
| Dymenso LLC | 4 |
3 |
| Triad National Security, LLC | 613 |
3 |
| Huawei Technologies Co., Ltd. | 113491 |
2 |
| Colorado State University Research Foundation | 709 |
2 |
| Fuzhou University | 318 |
2 |
| Canon Kabushiki Kaisha | 7065 |
2 |
| L3Harris Technologies, Inc. | 303 |
2 |
| Freemelt AB | 36 |
2 |
| Photonics West, LLC | 23 |
2 |
| E. I. du Pont de Nemours and Company | 4025 |
1 |
| Panasonic Corporation | 20059 |
1 |
| Sharp Corporation | 10272 |
1 |
| Nikon Corporation | 7206 |
1 |
| ASML Netherlands B.V. | 7429 |
1 |
| Other owners | 22 |