- All sections
- G - Physics
- G04C - Electromechanical clocks or watches
- G04C 21/00 - Producing acoustic time signals by electrical means
Patent holdings for IPC class G04C 21/00
Total number of patents in this class: 9
10-year publication summary
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0
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3
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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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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
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 147983 |
3 |
| Apple Inc. | 55640 |
1 |
| Koninklijke Philips N.V. | 24932 |
1 |
| RPX Corporation | 1295 |
1 |
| Harry Winston SA | 974 |
1 |
| The Swatch Group Research and Development Ltd | 862 |
1 |
| Senver Holdings, Pty Ltd. | 5 |
1 |
| Other owners | 0 |