- 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 21/00 - Projectors or projection-type viewersAccessories therefor
Patent holdings for IPC class G03B 21/00
Total number of patents in this class: 3960
10-year publication summary
|
353
|
370
|
410
|
303
|
253
|
202
|
181
|
151
|
119
|
95
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 20248 |
395 |
| Sony Corporation | 30208 |
250 |
| FUJIFILM Corporation | 30512 |
165 |
| NEC Display Solutions, Ltd. | 772 |
134 |
| Panasonic Intellectual Property Management Co., Ltd. | 33911 |
132 |
| Appotronics Corporation Limited | 1132 |
98 |
| NEC Corporation | 36934 |
78 |
| Sony Group Corporation | 15597 |
69 |
| Panasonic Projector & Display Corporation | 484 |
69 |
| Coretronic Corporation | 1370 |
67 |
| Ricoh Company, Ltd. | 13346 |
63 |
| JVC Kenwood Corporation | 3133 |
62 |
| Maxell, Ltd. | 3015 |
61 |
| Dolby Laboratories Licensing Corporation | 4320 |
57 |
| Konica Minolta, Inc. | 9116 |
56 |
| Sharp NEC Display Solutions, Ltd. | 536 |
48 |
| Casio Computer Co., Ltd. | 3502 |
40 |
| Canon Inc. | 43768 |
38 |
| Hisense Laser Display Co., Ltd. | 455 |
36 |
| 3m Innovative Properties Company | 17488 |
34 |
| Other owners | 2008 |