- 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 21/12 - Projectors or projection-type viewersAccessories therefor adapted for projection of either still pictures or motion pictures
Patent holdings for IPC class G03B 21/12
Total number of patents in this class: 52
10-year publication summary
|
4
|
4
|
8
|
2
|
9
|
9
|
5
|
7
|
1
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| RAD LAB 1, Inc. | 13 |
9 |
| EpiCrystals Oy | 9 |
3 |
| Universal City Studios LLC | 2540 |
3 |
| Maxell, Ltd. | 2797 |
3 |
| Disney Enterprises, Inc. | 6099 |
2 |
| Nokia Corporation | 5644 |
2 |
| Macquarie Medical Systems Pty Ltd | 3 |
2 |
| Samsung Electronics Co., Ltd. | 146092 |
1 |
| Sony Corporation | 31052 |
1 |
| Hewlett-Packard Development Company, L.P. | 25895 |
1 |
| Seiko Epson Corporation | 19352 |
1 |
| Ricoh Company, Ltd. | 13247 |
1 |
| Motorola Mobility LLC | 2651 |
1 |
| The Johns Hopkins University | 5667 |
1 |
| Appotronics Corporation Limited | 1115 |
1 |
| B/E Aerospace, Inc. | 1649 |
1 |
| Daqri, LLC | 69 |
1 |
| De Montfort University | 39 |
1 |
| Escea Limited | 15 |
1 |
| Koito Manufacturing Co., Ltd. | 2244 |
1 |
| Other owners | 15 |