- 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: 858
10-year publication summary
|
84
|
89
|
105
|
72
|
46
|
41
|
39
|
17
|
9
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 40733 |
124 |
| Ricoh Company, Ltd. | 13383 |
45 |
| NEC Corporation | 36164 |
35 |
| Hewlett-Packard Development Company, L.P. | 25671 |
35 |
| Olympus Corporation | 13116 |
34 |
| FUJIFILM Corporation | 29728 |
33 |
| Brother Industries, Ltd. | 12944 |
28 |
| Xerox Corporation | 6974 |
25 |
| Sony Corporation | 30885 |
20 |
| Sharp Kabushiki Kaisha | 18676 |
19 |
| Panasonic Corporation | 20007 |
16 |
| Konica Minolta, Inc. | 8840 |
16 |
| Canon Kabushiki Kaisha | 7121 |
15 |
| PFU Limited | 744 |
14 |
| Toshiba TEC Corporation | 3828 |
13 |
| Kyocera Document Solutions Inc. | 5761 |
13 |
| Seiko Epson Corporation | 19686 |
12 |
| Nikon Corporation | 7297 |
10 |
| Mitsubishi Electric Corporation | 46734 |
9 |
| FUJIFILM Business Innovation Corp. | 7733 |
9 |
| Other owners | 333 |