- All sections
- G - Physics
- G04B - Mechanically-driven clocks or watchesmechanical parts of clocks or watches in generaltime-pieces using the position of the sun, moon, or stars
- G04B 21/00 - Indicating the time by acoustic means
Patent holdings for IPC class G04B 21/00
Total number of patents in this class: 39
10-year publication summary
|
2
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0
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4
|
0
|
1
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0
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1
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2
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0
|
2
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Montres Breguet S.A. | 359 |
16 |
| Omega SA | 219 |
4 |
| Blancpain S.A. | 127 |
2 |
| Patek Philippe SA Geneve | 419 |
2 |
| Manufacture D'horlogerie Audemars Piguet SA | 95 |
2 |
| Samsung Electronics Co., Ltd. | 159298 |
1 |
| Koninklijke Philips N.V. | 26073 |
1 |
| Micro-Star International Co., Ltd. | 24 |
1 |
| Milus International S.A. | 21 |
1 |
| Montres Jaquet Droz SA | 39 |
1 |
| Montres TUDOR SA | 132 |
1 |
| Richemont International SA | 2936 |
1 |
| Société anonyme de la Manufacture d'horlogerie Audemars Piguet & Cie | 12 |
1 |
| The Swatch Group Research and Development Ltd | 879 |
1 |
| Van Cleef & Arpels S.A. | 6 |
1 |
| Tianjin Seagull Watch Co., Ltd. | 21 |
1 |
| Celsius X VI II | 6 |
1 |
| Current Lighting Solutions, LLC f/k/a GE Lighting Solutions, LLC | 385 |
1 |
| Other owners | 0 |