- 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 9/42 - Double plate with adjustable slotDouble plate with mechanism controlling relative movement of plates to form slot
Patent holdings for IPC class G03B 9/42
Total number of patents in this class: 30
10-year publication summary
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4
|
2
|
7
|
5
|
1
|
0
|
1
|
1
|
0
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Group Corporation | 65 |
6 |
| Canon Inc. | 40352 |
5 |
| Panasonic Intellectual Property Management Co., Ltd. | 31806 |
4 |
| Nidec Copal Corporation | 271 |
4 |
| TDK Taiwan Corp. | 808 |
3 |
| Sony Corporation | 30936 |
2 |
| Seiko Holdings Kabushiki Kaisha, TA Seiko Holdings Corporation | 25 |
2 |
| FUJIFILM Corporation | 29543 |
1 |
| Nikon Corporation | 7213 |
1 |
| Canon Denshi Kabushiki Kaisha | 182 |
1 |
| Coretronic Intelligent Robotics Corporation | 25 |
1 |
| Other owners | 0 |