- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 1/409 - Edge or detail enhancementNoise or error suppression
Patent holdings for IPC class H04N 1/409
Total number of patents in this class: 837
10-year publication summary
|
89
|
105
|
72
|
46
|
40
|
39
|
17
|
13
|
9
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 44414 |
123 |
| Ricoh Company, Ltd. | 13407 |
44 |
| NEC Corporation | 37491 |
34 |
| FUJIFILM Corporation | 30774 |
33 |
| Olympus Corporation | 12900 |
33 |
| Hewlett-Packard Development Company, L.P. | 25121 |
32 |
| Brother Industries, Ltd. | 12856 |
28 |
| Sharp Kabushiki Kaisha | 18484 |
19 |
| Sony Corporation | 30029 |
18 |
| Konica Minolta, Inc. | 9194 |
17 |
| Xerox Corporation | 4381 |
16 |
| Seiko Epson Corporation | 20528 |
15 |
| Canon Kabushiki Kaisha | 7406 |
15 |
| Panasonic Corporation | 18658 |
14 |
| PFU Limited | 788 |
14 |
| Toshiba TEC Corporation | 3914 |
13 |
| Kyocera Document Solutions Inc. | 6378 |
13 |
| Mitsubishi Electric Corporation | 48409 |
10 |
| FUJIFILM Business Innovation Corp. | 8107 |
10 |
| Sharp Corporation | 10880 |
8 |
| Other owners | 328 |