- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 5/20 - Circuitry for controlling amplitude response
Patent holdings for IPC class H04N 5/20
Total number of patents in this class: 439
10-year publication summary
|
37
|
44
|
43
|
52
|
35
|
30
|
24
|
17
|
9
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Panasonic Intellectual Property Management Co., Ltd. | 30711 |
75 |
| Sony Corporation | 31215 |
41 |
| B1 Institute of Image Technology, Inc. | 285 |
21 |
| Dolby Laboratories Licensing Corporation | 4073 |
17 |
| Apple Inc. | 54162 |
15 |
| Koninklijke Philips N.V. | 24439 |
14 |
| Sony Group Corporation | 13314 |
13 |
| Canon Inc. | 39160 |
12 |
| Sharp Kabushiki Kaisha | 18857 |
12 |
| Samsung Electronics Co., Ltd. | 143021 |
11 |
| Olympus Corporation | 13213 |
9 |
| Microsoft Technology Licensing, LLC | 53429 |
9 |
| Panasonic Corporation | 20198 |
8 |
| Sony Semiconductor Solutions Corporation | 10145 |
6 |
| ViXS Systems, Inc. | 108 |
6 |
| Qualcomm Incorporated | 83961 |
4 |
| Intel Corporation | 46631 |
4 |
| FUJIFILM Corporation | 29151 |
4 |
| Mitsubishi Electric Corporation | 45583 |
4 |
| Pioneer Corporation | 4420 |
4 |
| Other owners | 150 |