- 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: 658
10-year publication summary
|
51
|
59
|
60
|
55
|
64
|
70
|
57
|
41
|
26
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 131630 |
52 |
| LG Electronics Inc. | 69257 |
37 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
35 |
| Canon Inc. | 36841 |
24 |
| Dolby Laboratories Licensing Corporation | 3883 |
22 |
| Sharp Kabushiki Kaisha | 18957 |
17 |
| Sony Corporation | 32931 |
14 |
| Apple Inc. | 50209 |
13 |
| Sharp Corporation | 10015 |
13 |
| Seiko Epson Corporation | 18724 |
12 |
| Huawei Technologies Co., Ltd. | 100781 |
11 |
| Maxell, Ltd. | 2533 |
11 |
| Samsung Display Co., Ltd. | 30585 |
10 |
| Microsoft Technology Licensing, LLC | 51439 |
10 |
| Saturn Licensing LLC | 1502 |
9 |
| Maxell Holdings, Ltd. | 1422 |
9 |
| Panasonic Intellectual Property Corporation of America | 7230 |
8 |
| Boe Technology Group Co., Ltd. | 35384 |
8 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8635 |
7 |
| Sharp NEC Display Solutions, Ltd. | 493 |
7 |
| Other owners | 329 |