- 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: 481
10-year publication summary
27
|
32
|
22
|
19
|
40
|
26
|
27
|
26
|
22
|
6
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Tsinghua University | 5426 |
37 |
Hon Hai Precision Industry Co., Ltd. | 4157 |
36 |
NCX Corporation | 33 |
19 |
KLA-Tencor Corporation | 2574 |
16 |
LightLab Sweden AB | 39 |
16 |
Electronics and Telecommunications Research Institute | 8830 |
12 |
Samsung Electronics Co., Ltd. | 131630 |
10 |
Denki Kagaku Kogyo Kabushiki Kaisha | 680 |
10 |
National Institute for Materials Science | 1108 |
10 |
Massachusetts Institute of Technology | 9795 |
9 |
National Institute of Advanced Industrial Science and Technology | 3677 |
8 |
E. I. du Pont de Nemours and Company | 4345 |
7 |
Thales | 1854 |
7 |
Hitachi High-Technologies Corporation | 2034 |
6 |
ASML Netherlands B.V. | 6816 |
6 |
Meidensha Corporation | 823 |
6 |
KLA Corporation | 1223 |
6 |
Hitachi High-Tech Corporation | 4424 |
6 |
Centre National de La Recherche Scientifique | 9632 |
5 |
Toray Industries, Inc. | 6652 |
4 |
Other owners | 245 |