- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 13/00 - Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
Patent holdings for IPC class H01J 13/00
Total number of patents in this class: 5
10-year publication summary
|
0
|
0
|
0
|
2
|
1
|
1
|
0
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| May Patents Ltd. | 140 |
1 |
| Landis+Gyr Technology, Inc. | 441 |
1 |
| Innogy Innovation GmbH | 45 |
1 |
| ABB Technology Ltd | 478 |
1 |
| 2S Water Incorporated | 19 |
1 |
| Other owners | 0 |