- 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 39/00 - Watch crystalsFastening or sealing crystalsClock glasses
Patent holdings for IPC class G04B 39/00
Total number of patents in this class: 112
10-year publication summary
|
15
|
4
|
12
|
13
|
8
|
6
|
8
|
5
|
7
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Swatch Group Research and Development Ltd | 826 |
14 |
| Seiko Epson Corporation | 19269 |
9 |
| Comadur S.A. | 88 |
8 |
| Rolex S.A. | 660 |
8 |
| Realization Desal AG | 31 |
7 |
| ETA SA Manufacture Horlogere Suisse | 673 |
6 |
| Seiko Instruments Inc. | 505 |
5 |
| Apple Inc. | 54479 |
3 |
| Casio Computer Co., Ltd. | 3420 |
3 |
| Montres Breguet S.A. | 346 |
3 |
| Montres Rado S.A. | 14 |
3 |
| Levitation AG | 6 |
3 |
| FGP Capital SA | 3 |
3 |
| Montres TUDOR SA | 128 |
2 |
| Omega SA | 212 |
2 |
| Richemont International SA | 2698 |
2 |
| Adamant Namiki Precision Jewel Co., Ltd. | 93 |
2 |
| Seiko Watch Corporation | 112 |
2 |
| E. I. du Pont de Nemours and Company | 4118 |
1 |
| FUJIFILM Corporation | 29228 |
1 |
| Other owners | 25 |