- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 37/68 - Contacts sealed in evacuated or gas-filled tube
Patent holdings for IPC class H01H 37/68
Total number of patents in this class: 2
10-year publication summary
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0
|
0
|
1
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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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0
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rich Brand Industries Limited | 27 |
1 |
| Ubukata Industries Co., Ltd. | 54 |
1 |
| Other owners | 0 |