- 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
|
6
|
2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Canon Inc. | 39660 |
109 |
Brother Industries, Ltd. | 12966 |
36 |
Hewlett-Packard Development Company, L.P. | 25910 |
31 |
Ricoh Company, Ltd. | 13198 |
31 |
FUJIFILM Corporation | 29295 |
28 |
Sony Corporation | 31107 |
23 |
Xerox Corporation | 7021 |
21 |
Seiko Epson Corporation | 19316 |
18 |
Olympus Corporation | 13187 |
18 |
Kyocera Document Solutions Inc. | 5544 |
17 |
Konica Minolta, Inc. | 8701 |
16 |
FUJIFILM Business Innovation Corp. | 7580 |
15 |
NEC Corporation | 35509 |
14 |
Sharp Kabushiki Kaisha | 18781 |
14 |
Toshiba TEC Corporation | 3783 |
13 |
Qualcomm Incorporated | 84847 |
10 |
Toshiba Corporation | 12317 |
10 |
Nikon Corporation | 7168 |
10 |
EIZO Corporation | 269 |
10 |
Canon Kabushiki Kaisha | 7051 |
10 |
Other owners | 287 |