- All sections
- H - Electricity
- H03F - Amplifiers
- H03F 3/36 - Dc amplifiers in which all stages are dc-coupled with tubes only
Patent holdings for IPC class H03F 3/36
Total number of patents in this class: 3
10-year publication summary
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0
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0
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0
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0
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1
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0
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0
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0
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1
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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
|
|---|---|---|
| Sharp Corporation | 10191 |
1 |
| Advanced Fusion Systems LLC | 67 |
1 |
| Harman International Industries, Incorporated | 2539 |
1 |
| Other owners | 0 |