- All sections
- G - Physics
- G03B - Apparatus or arrangements for taking photographs or for projecting or viewing themapparatus or arrangements employing analogous techniques using waves other than optical wavesaccessories therefor
- G03B 21/53 - Means for automatic focusing, e.g. to compensate thermal effects
Patent holdings for IPC class G03B 21/53
Total number of patents in this class: 154
10-year publication summary
|
13
|
15
|
15
|
17
|
12
|
8
|
8
|
18
|
9
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 19319 |
17 |
| Samsung Electronics Co., Ltd. | 145416 |
12 |
| Coretronic Corporation | 1274 |
7 |
| Canon Inc. | 39713 |
5 |
| Pentair Water Pool and Spa, Inc. | 443 |
5 |
| Ricoh Company, Ltd. | 13247 |
4 |
| Appotronics Corporation Limited | 1115 |
4 |
| KEYENCE Corporation | 434 |
4 |
| Piqs Technology (Shenzhen) Limited | 30 |
4 |
| dgt corporation | 6 |
4 |
| FUJIFILM Corporation | 29305 |
3 |
| ZTE Corporation | 42203 |
3 |
| Butterfly Technology (Shenzhen) Limited | 9 |
3 |
| Chengdu XGimi Technology Co., Ltd. | 110 |
3 |
| Iview Displays (Shenzhen) Company Ltd. | 186 |
3 |
| Hisense Laser Display Co., Ltd. | 385 |
3 |
| LG Electronics Inc. | 72807 |
2 |
| Sony Corporation | 31093 |
2 |
| Nikon Corporation | 7158 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 31221 |
2 |
| Other owners | 62 |