- All sections
- G - Physics
- G04R - Radio-controlled time-pieces
- G04R 20/28 - Tuning or receivingCircuits therefor
Patent holdings for IPC class G04R 20/28
Total number of patents in this class: 11
10-year publication summary
|
2
|
1
|
1
|
2
|
2
|
0
|
0
|
0
|
0
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 20536 |
2 |
| Casio Computer Co., Ltd. | 3518 |
2 |
| Baidu USA LLC | 1095 |
1 |
| Cvengineering Corporation | 4 |
1 |
| Tohoku Electric Power Co., Inc. | 29 |
1 |
| vertu Corporation Limited | 21 |
1 |
| Shenzhen Smartmovt Data Services Co., Ltd. | 5 |
1 |
| Shenzhen Inshow Technology Co., Ltd | 6 |
1 |
| Jiangsu XCMG State Key Laboratory Technology Co., Ltd. | 47 |
1 |
| Other owners | 0 |