- 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: 3923
10-year publication summary
|
343
|
366
|
406
|
302
|
251
|
200
|
178
|
151
|
117
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 19805 |
382 |
| Sony Corporation | 30588 |
253 |
| FUJIFILM Corporation | 30034 |
165 |
| Panasonic Intellectual Property Management Co., Ltd. | 32983 |
165 |
| NEC Display Solutions, Ltd. | 785 |
134 |
| Appotronics Corporation Limited | 1124 |
98 |
| NEC Corporation | 36448 |
78 |
| Sony Group Corporation | 14912 |
68 |
| Coretronic Corporation | 1322 |
64 |
| Ricoh Company, Ltd. | 13339 |
63 |
| Maxell, Ltd. | 2913 |
61 |
| JVC Kenwood Corporation | 3073 |
58 |
| Konica Minolta, Inc. | 8964 |
56 |
| Dolby Laboratories Licensing Corporation | 4239 |
55 |
| Sharp NEC Display Solutions, Ltd. | 538 |
48 |
| Casio Computer Co., Ltd. | 3459 |
40 |
| Canon Inc. | 41672 |
39 |
| 3m Innovative Properties Company | 17592 |
34 |
| Hisense Laser Display Co., Ltd. | 431 |
34 |
| Panasonic Corporation | 19874 |
33 |
| Other owners | 1995 |