- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 5/57 - Control of contrast or brightness
Patent holdings for IPC class H04N 5/57
Total number of patents in this class: 656
10-year publication summary
|
59
|
60
|
55
|
64
|
70
|
58
|
44
|
31
|
15
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 144426 |
55 |
| LG Electronics Inc. | 72559 |
40 |
| Panasonic Intellectual Property Management Co., Ltd. | 31022 |
35 |
| Canon Inc. | 39538 |
25 |
| Dolby Laboratories Licensing Corporation | 4098 |
22 |
| Sharp Kabushiki Kaisha | 18787 |
16 |
| Sony Corporation | 31138 |
14 |
| Apple Inc. | 54527 |
13 |
| Seiko Epson Corporation | 19281 |
11 |
| Sharp Corporation | 10302 |
11 |
| Huawei Technologies Co., Ltd. | 111237 |
11 |
| Samsung Display Co., Ltd. | 34290 |
10 |
| Microsoft Technology Licensing, LLC | 53545 |
10 |
| Saturn Licensing LLC | 1447 |
10 |
| Maxell, Ltd. | 2775 |
10 |
| Koninklijke Philips N.V. | 24610 |
8 |
| Panasonic Intellectual Property Corporation of America | 7622 |
8 |
| Boe Technology Group Co., Ltd. | 40653 |
8 |
| Maxell Holdings, Ltd. | 1326 |
8 |
| Sharp NEC Display Solutions, Ltd. | 514 |
7 |
| Other owners | 324 |