- 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: 452
10-year publication summary
|
38
|
37
|
44
|
43
|
52
|
34
|
30
|
23
|
17
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
73 |
| Sony Corporation | 32931 |
43 |
| Dolby Laboratories Licensing Corporation | 3883 |
17 |
| B1 Institute of Image Technology, Inc. | 132 |
16 |
| Apple Inc. | 50209 |
14 |
| Canon Inc. | 36841 |
14 |
| Koninklijke Philips N.V. | 22975 |
14 |
| Olympus Corporation | 13667 |
13 |
| Sharp Kabushiki Kaisha | 18957 |
12 |
| Sony Group Corporation | 10730 |
12 |
| Samsung Electronics Co., Ltd. | 131630 |
11 |
| Microsoft Technology Licensing, LLC | 51439 |
9 |
| Panasonic Corporation | 20786 |
8 |
| Sony Semiconductor Solutions Corporation | 8770 |
6 |
| ViXS Systems, Inc. | 112 |
6 |
| Intel Corporation | 45621 |
4 |
| Micron Technology, Inc. | 24960 |
4 |
| FUJIFILM Corporation | 27102 |
4 |
| Mitsubishi Electric Corporation | 43934 |
4 |
| Pioneer Corporation | 4843 |
4 |
| Other owners | 164 |