- 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 21/14 - Projectors or projection-type viewersAccessories therefor Details
Patent holdings for IPC class G03B 21/14
Total number of patents in this class: 5574
10-year publication summary
|
396
|
504
|
555
|
460
|
404
|
303
|
263
|
226
|
198
|
134
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 20248 |
615 |
| Sony Corporation | 30208 |
305 |
| Coretronic Corporation | 1370 |
252 |
| FUJIFILM Corporation | 30512 |
224 |
| NEC Display Solutions, Ltd. | 772 |
195 |
| Panasonic Intellectual Property Management Co., Ltd. | 33911 |
192 |
| Appotronics Corporation Limited | 1132 |
139 |
| Maxell, Ltd. | 3015 |
118 |
| Samsung Electronics Co., Ltd. | 157557 |
115 |
| Ricoh Company, Ltd. | 13346 |
109 |
| NEC Corporation | 36934 |
107 |
| Panasonic Projector & Display Corporation | 484 |
106 |
| Casio Computer Co., Ltd. | 3502 |
83 |
| Konica Minolta, Inc. | 9116 |
71 |
| Canon Inc. | 43768 |
69 |
| Sharp NEC Display Solutions, Ltd. | 536 |
67 |
| Maxell Holdings, Ltd. | 1259 |
66 |
| JVC Kenwood Corporation | 3133 |
63 |
| Sony Group Corporation | 15597 |
51 |
| LG Electronics Inc. | 75654 |
50 |
| Other owners | 2577 |