- 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 21/16 - Cooling; Preventing overheating
Patent holdings for IPC class G03B 21/16
Total number of patents in this class: 1402
10-year publication summary
|
111
|
121
|
154
|
143
|
147
|
145
|
121
|
106
|
89
|
40
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 18724 |
259 |
| Coretronic Corporation | 1165 |
143 |
| Sony Corporation | 32931 |
93 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
68 |
| Appotronics Corporation Limited | 1111 |
63 |
| NEC Display Solutions, Ltd. | 822 |
59 |
| Ricoh Company, Ltd. | 13266 |
48 |
| Casio Computer Co., Ltd. | 3343 |
48 |
| FUJIFILM Corporation | 27102 |
35 |
| Sharp NEC Display Solutions, Ltd. | 493 |
34 |
| Delta Electronics, Inc. | 2401 |
27 |
| Hisense Laser Display Co., Ltd. | 315 |
27 |
| Sanyo Electric Co., Ltd. | 3926 |
26 |
| Canon Inc. | 36841 |
23 |
| Maxell, Ltd. | 2533 |
23 |
| Qisda Corporation | 392 |
18 |
| JVC Kenwood Corporation | 2774 |
13 |
| Panasonic Automotive Systems Co., Ltd. | 1440 |
13 |
| Maxell Holdings, Ltd. | 1422 |
12 |
| NEC Corporation | 32703 |
10 |
| Other owners | 360 |