- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 27/04 - Ion sourcesIon guns using reflex discharge, e.g. Penning ion sources
Patent holdings for IPC class H01J 27/04
Total number of patents in this class: 28
10-year publication summary
|
3
|
4
|
5
|
3
|
1
|
1
|
3
|
0
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi High-Technologies Corporation | 2002 |
6 |
| Hitachi High-Tech Corporation | 5364 |
6 |
| Varian Semiconductor Equipment Associates, Inc. | 1231 |
2 |
| Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (ciemat) | 50 |
2 |
| ColdQuanta, Inc., AKA ColdQuanta | 173 |
2 |
| ION LAB Co., Ltd. | 2 |
2 |
| Schlumberger Technology Corporation | 10868 |
1 |
| The Regents of the University of California | 20059 |
1 |
| Aviza Technology Limited | 12 |
1 |
| Nissin ION Equipment Co., Ltd. | 85 |
1 |
| Nitride Solutions Inc. | 12 |
1 |
| ULVAC, Inc. | 1378 |
1 |
| Alpha Ring International, Ltd. | 34 |
1 |
| ViewRay Systems, Inc. | 106 |
1 |
| Other owners | 0 |