- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 1/304 - Field-emissive cathodes
Patent holdings for IPC class H01J 1/304
Total number of patents in this class: 473
10-year publication summary
|
32
|
22
|
19
|
40
|
26
|
27
|
27
|
23
|
15
|
10
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tsinghua University | 5931 |
37 |
| Hon Hai Precision Industry Co., Ltd. | 4034 |
36 |
| NCX Corporation | 38 |
20 |
| KLA-Tencor Corporation | 2544 |
16 |
| LightLab Sweden AB | 37 |
15 |
| Electronics and Telecommunications Research Institute | 9394 |
12 |
| Samsung Electronics Co., Ltd. | 146346 |
10 |
| Massachusetts Institute of Technology | 10055 |
9 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 627 |
9 |
| Meidensha Corporation | 882 |
9 |
| National Institute for Materials Science | 1105 |
8 |
| E. I. du Pont de Nemours and Company | 4071 |
7 |
| National Institute of Advanced Industrial Science and Technology | 3802 |
7 |
| Hitachi High-Technologies Corporation | 2004 |
6 |
| ASML Netherlands B.V. | 7392 |
6 |
| KLA Corporation | 1555 |
6 |
| Hitachi High-Tech Corporation | 5323 |
6 |
| Centre National de La Recherche Scientifique | 10432 |
5 |
| Thales | 1844 |
5 |
| Nano-x Imaging Ltd | 18 |
5 |
| Other owners | 239 |