- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 41/20 - Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of cold cathodes using gettering substances
Patent holdings for IPC class H01J 41/20
Total number of patents in this class: 23
10-year publication summary
|
3
|
6
|
1
|
3
|
1
|
1
|
0
|
2
|
3
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| SAES Getters S.p.A. | 325 |
7 |
| Edwards Vacuum LLC | 180 |
6 |
| Hitachi High-Technologies Corporation | 1997 |
2 |
| National Institute of Information and Communications Technology | 639 |
2 |
| Agilent Technologies, Inc. | 2632 |
1 |
| ColdQuanta, Inc., AKA ColdQuanta | 173 |
1 |
| Helion Energy, Inc. | 43 |
1 |
| SRI International | 995 |
1 |
| Hitachi High-Tech Corporation | 5404 |
1 |
| ViewRay Systems, Inc. | 106 |
1 |
| Other owners | 0 |