- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 1/407 - Control or modification of tonal gradation or of extreme levels, e.g. background level
Patent holdings for IPC class H04N 1/407
Total number of patents in this class: 741
10-year publication summary
|
55
|
90
|
82
|
67
|
49
|
32
|
23
|
16
|
12
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 39765 |
109 |
| Brother Industries, Ltd. | 12958 |
36 |
| Hewlett-Packard Development Company, L.P. | 25887 |
31 |
| Ricoh Company, Ltd. | 13240 |
31 |
| FUJIFILM Corporation | 29329 |
28 |
| Sony Corporation | 31080 |
23 |
| Xerox Corporation | 7020 |
21 |
| Seiko Epson Corporation | 19321 |
18 |
| Olympus Corporation | 13186 |
18 |
| Kyocera Document Solutions Inc. | 5573 |
18 |
| Konica Minolta, Inc. | 8710 |
16 |
| FUJIFILM Business Innovation Corp. | 7582 |
15 |
| NEC Corporation | 35567 |
14 |
| Sharp Kabushiki Kaisha | 18771 |
14 |
| Toshiba TEC Corporation | 3784 |
13 |
| Qualcomm Incorporated | 85094 |
10 |
| Toshiba Corporation | 12326 |
10 |
| Nikon Corporation | 7159 |
10 |
| EIZO Corporation | 270 |
10 |
| Canon Kabushiki Kaisha | 7050 |
10 |
| Other owners | 286 |