- 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: 5552
10-year publication summary
|
396
|
504
|
555
|
460
|
404
|
303
|
260
|
224
|
197
|
73
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 20022 |
614 |
| Sony Corporation | 30368 |
305 |
| Coretronic Corporation | 1344 |
246 |
| Panasonic Intellectual Property Management Co., Ltd. | 33634 |
239 |
| FUJIFILM Corporation | 30294 |
223 |
| NEC Display Solutions, Ltd. | 778 |
195 |
| Appotronics Corporation Limited | 1130 |
139 |
| Maxell, Ltd. | 2945 |
125 |
| Samsung Electronics Co., Ltd. | 154406 |
111 |
| Ricoh Company, Ltd. | 13299 |
108 |
| NEC Corporation | 36702 |
107 |
| Casio Computer Co., Ltd. | 3489 |
84 |
| Maxell Holdings, Ltd. | 1273 |
74 |
| Konica Minolta, Inc. | 9040 |
71 |
| Canon Inc. | 42406 |
69 |
| Sharp NEC Display Solutions, Ltd. | 538 |
67 |
| JVC Kenwood Corporation | 3115 |
63 |
| LG Electronics Inc. | 75112 |
51 |
| Sony Group Corporation | 15235 |
51 |
| Mitsubishi Electric Corporation | 47655 |
45 |
| Other owners | 2565 |