- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 21/00 - Vacuum tubes
Patent holdings for IPC class H01J 21/00
Total number of patents in this class: 13
10-year publication summary
|
2
|
2
|
0
|
1
|
0
|
1
|
1
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Micron Technology, Inc. | 24960 |
2 |
| Lam Research Corporation | 4775 |
2 |
| General Electric Company | 18133 |
1 |
| Nikon Metrology, NV | 69 |
1 |
| ASML Netherlands B.V. | 6816 |
1 |
| Advanced Fusion Systems LLC | 66 |
1 |
| Imago Scientific Instruments Corporation | 18 |
1 |
| Shenzhen Bencent Electronics Co., Ltd. | 16 |
1 |
| Triad National Security, LLC | 580 |
1 |
| AP Novelty Pte. Ltd. | 1 |
1 |
| Averoses Incorporated | 1 |
1 |
| Other owners | 0 |