- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 9/804 - Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
Patent holdings for IPC class H04N 9/804
Total number of patents in this class: 655
10-year publication summary
|
121
|
109
|
80
|
68
|
45
|
30
|
22
|
19
|
13
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 36841 |
73 |
| Mitsubishi Electric Corporation | 43934 |
36 |
| Panasonic Intellectual Property Corporation of America | 7230 |
36 |
| Sony Corporation | 32931 |
34 |
| Samsung Electronics Co., Ltd. | 131630 |
26 |
| Maxell, Ltd. | 2533 |
22 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
19 |
| Maxell Holdings, Ltd. | 1422 |
18 |
| Nikon Corporation | 7162 |
17 |
| TiVo Solutions Inc. | 287 |
16 |
| Qualcomm Incorporated | 76576 |
11 |
| LG Electronics Inc. | 69257 |
10 |
| Panasonic Corporation | 20786 |
8 |
| Casio Computer Co., Ltd. | 3343 |
7 |
| Snap Inc. | 4604 |
7 |
| Rovi Guides, Inc. | 3236 |
7 |
| Avago Technologies International Sales Pte. Limited | 9260 |
7 |
| International Business Machines Corporation | 60644 |
6 |
| Olympus Corporation | 13667 |
6 |
| Google LLC | 38759 |
6 |
| Other owners | 283 |