- 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 17/28 - Compensation of mechanisms for stabilizing frequency for the effect of imbalance of the weights, e.g. tourbillon
Patent holdings for IPC class G04B 17/28
Total number of patents in this class: 123
10-year publication summary
|
6
|
11
|
19
|
10
|
9
|
8
|
7
|
4
|
4
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Swatch Group Research and Development Ltd | 877 |
15 |
| ETA SA Manufacture Horlogere Suisse | 704 |
14 |
| Montres Breguet S.A. | 362 |
11 |
| Blancpain S.A. | 127 |
10 |
| CompliTime SA | 28 |
6 |
| Omega SA | 220 |
6 |
| Greubel Forsey S.A. | 40 |
6 |
| LVMH Swiss manufactures SA | 272 |
4 |
| Patek Philippe SA Geneve | 417 |
4 |
| Tianjin Seagull Watch Co., Ltd. | 21 |
4 |
| Glashütter Uhrenbetrieb GmbH | 81 |
3 |
| Harry Winston SA | 1081 |
3 |
| HUBLOT SA, Geneve | 159 |
3 |
| Nivarox-FAR S.A. | 287 |
3 |
| Richemont International SA | 2934 |
3 |
| Seiko Watch Corporation | 111 |
3 |
| Ecole Polytechnique Federale de Lausanne (epfl) | 1614 |
2 |
| Glashuetter Uhrenbetrieb GmbH | 6 |
2 |
| Manufacture Roger Dubuis S.A. | 3 |
2 |
| Tec Ebauches SA | 2 |
2 |
| Other owners | 17 |