- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 9/69 - Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction
Patent holdings for IPC class H04N 9/69
Total number of patents in this class: 285
10-year publication summary
|
35
|
24
|
30
|
23
|
24
|
26
|
23
|
17
|
19
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 147334 |
27 |
| Sony Corporation | 30957 |
23 |
| Canon Inc. | 40280 |
22 |
| Dolby Laboratories Licensing Corporation | 4140 |
13 |
| Saturn Licensing LLC | 1439 |
13 |
| Huawei Technologies Co., Ltd. | 113491 |
12 |
| Samsung Display Co., Ltd. | 35100 |
7 |
| LG Electronics Inc. | 73476 |
6 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8476 |
6 |
| Sony Group Corporation | 14045 |
6 |
| Qualcomm Incorporated | 86153 |
5 |
| FUJIFILM Corporation | 29506 |
4 |
| e Ink Corporation | 1508 |
4 |
| Koninklijke Philips N.V. | 24827 |
3 |
| Olympus Corporation | 13153 |
3 |
| National Semiconductor Corporation | 1039 |
3 |
| Panasonic Intellectual Property Corporation of America | 6832 |
3 |
| Novatek Microelectronics Corp. | 1344 |
3 |
| Boe Technology Group Co., Ltd. | 41461 |
3 |
| Sony Interactive Entertainment Inc. | 5910 |
3 |
| Other owners | 116 |