- All sections
- G - Physics
- G03B - Apparatus or arrangements for taking photographs or for projecting or viewing them; apparatus or arrangements employing analogous techniques using waves other than optical waves; accessories therefor
- G03B 21/14 - Projectors or projection-type viewers; Accessories therefor - Details
Patent holdings for IPC class G03B 21/14
Total number of patents in this class: 5459
10-year publication summary
|
392
|
441
|
396
|
504
|
555
|
460
|
400
|
292
|
247
|
68
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 18724 |
593 |
| Sony Corporation | 32931 |
317 |
| Coretronic Corporation | 1165 |
217 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
216 |
| FUJIFILM Corporation | 27102 |
211 |
| NEC Display Solutions, Ltd. | 822 |
195 |
| Appotronics Corporation Limited | 1111 |
138 |
| Maxell, Ltd. | 2533 |
135 |
| Ricoh Company, Ltd. | 13266 |
109 |
| NEC Corporation | 32703 |
106 |
| Casio Computer Co., Ltd. | 3343 |
92 |
| Maxell Holdings, Ltd. | 1422 |
86 |
| Canon Inc. | 36841 |
75 |
| Konica Minolta, Inc. | 8349 |
71 |
| Samsung Electronics Co., Ltd. | 131630 |
70 |
| Sharp NEC Display Solutions, Ltd. | 493 |
68 |
| JVC Kenwood Corporation | 2774 |
58 |
| Panasonic Corporation | 20786 |
57 |
| Sony Group Corporation | 10730 |
50 |
| LG Electronics Inc. | 69257 |
46 |
| Other owners | 2549 |