- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 21/04 - Tubes with a single discharge path without control means, i.e. diodes
Patent holdings for IPC class H01J 21/04
Total number of patents in this class: 8
10-year publication summary
1
|
1
|
2
|
0
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2
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0
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0
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0
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0
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0
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2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
British Telecommunications Public Limited Company | 2575 |
2 |
STMicroelectronics S.r.l. | 3693 |
2 |
Siemens AG | 24990 |
1 |
Micron Technology, Inc. | 24960 |
1 |
STMicroelectronics Pte Ltd. | 180 |
1 |
Siemens Energy Global GmbH & Co. KG | 2775 |
1 |
Other owners | 0 |