- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 9/42 - Measurement or testing during manufacture
Patent holdings for IPC class H01J 9/42
Total number of patents in this class: 41
10-year publication summary
|
0
|
3
|
4
|
2
|
3
|
2
|
1
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Panasonic Corporation | 19530 |
4 |
| ASML Netherlands B.V. | 7762 |
3 |
| Nikon Corporation | 7298 |
2 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8474 |
2 |
| A.L.M.T. Corp. | 240 |
2 |
| Magnolia Blue Corporation | 1160 |
2 |
| The Regents of the University of California | 20574 |
1 |
| Sharp Corporation | 10471 |
1 |
| Hitachi, Ltd. | 15918 |
1 |
| Koninklijke Philips Electronics N.V. | 7936 |
1 |
| Electronics and Telecommunications Research Institute | 9534 |
1 |
| Mitsubishi Electric Corporation | 47655 |
1 |
| Tokyo Electron Limited | 13561 |
1 |
| Nikon Metrology, NV | 64 |
1 |
| Brookhaven Science Associates, LLC | 200 |
1 |
| Hitachi Plasma Display Limited | 84 |
1 |
| Incom, Inc. | 11 |
1 |
| LightLab Sweden AB | 24 |
1 |
| Nanyang Technological University | 2161 |
1 |
| Nippon Electric Glass Co., Ltd. | 2516 |
1 |
| Other owners | 12 |