- 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 21/56 - Projection screens
Patent holdings for IPC class G03B 21/56
Total number of patents in this class: 769
10-year publication summary
|
79
|
75
|
70
|
80
|
76
|
65
|
55
|
27
|
20
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Appotronics Corporation Limited | 1114 |
40 |
| RealD Inc. | 259 |
33 |
| Hisense Laser Display Co., Ltd. | 385 |
27 |
| Seiko Epson Corporation | 19296 |
20 |
| Dolby Laboratories Licensing Corporation | 4107 |
18 |
| IMAX Corporation | 258 |
14 |
| Disney Enterprises, Inc. | 6088 |
13 |
| Sony Corporation | 31124 |
13 |
| CJ CGV Co., Ltd. | 78 |
13 |
| Draper, Inc. | 66 |
12 |
| Maxell, Ltd. | 2780 |
12 |
| Samsung Electronics Co., Ltd. | 144675 |
11 |
| Boe Technology Group Co., Ltd. | 40728 |
11 |
| Mssl Consolidated Inc. | 104 |
11 |
| 3m Innovative Properties Company | 17853 |
10 |
| LG Electronics Inc. | 72675 |
10 |
| Barco N.V. | 537 |
9 |
| Saint-Gobain Glass France | 3758 |
9 |
| Universal City Studios LLC | 2507 |
9 |
| Coretronic Corporation | 1268 |
8 |
| Other owners | 466 |