- All sections
- G - Physics
- G03B - Apparatus or arrangements for taking photographs or for projecting or viewing them; apparatus or arrangements employing analogous techniques using waves other than optical waves; accessories therefor
- G03B 21/58 - Projection screens of variable area
Patent holdings for IPC class G03B 21/58
Total number of patents in this class: 237
10-year publication summary
|
23
|
20
|
25
|
21
|
40
|
24
|
32
|
28
|
17
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hisense Laser Display Co., Ltd. | 315 |
21 |
| Appotronics Corporation Limited | 1111 |
10 |
| Izumi-Cosmo Company, Limited | 42 |
9 |
| Draper, Inc. | 70 |
8 |
| Arovia, Inc. | 13 |
7 |
| Barco N.V. | 478 |
6 |
| Samsung Electronics Co., Ltd. | 131630 |
5 |
| LG Display Co., Ltd. | 11907 |
5 |
| Mirraviz, Inc. | 30 |
5 |
| Seiko Epson Corporation | 18724 |
3 |
| CJ CGV Co., Ltd. | 78 |
3 |
| Coretronic Corporation | 1165 |
3 |
| Golf Pro Delivered, LLC | 5 |
3 |
| Hayashiguchi MFG Co., Ltd. | 14 |
3 |
| Korn Wall Limited, TA KwickScreen | 13 |
3 |
| Milestone AV Technologies LLC | 65 |
3 |
| RealD Inc. | 260 |
3 |
| Prysm Systems, Inc. | 87 |
3 |
| Jiangsu Shunhe Internet of Things Technology Co., Ltd. | 4 |
3 |
| Sony Corporation | 32931 |
2 |
| Other owners | 129 |