- 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: 863
10-year publication summary
|
84
|
89
|
105
|
72
|
46
|
41
|
39
|
17
|
9
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 39538 |
123 |
| Ricoh Company, Ltd. | 13209 |
45 |
| Olympus Corporation | 13197 |
37 |
| Hewlett-Packard Development Company, L.P. | 25940 |
36 |
| NEC Corporation | 35424 |
35 |
| FUJIFILM Corporation | 29251 |
33 |
| Brother Industries, Ltd. | 12961 |
28 |
| Xerox Corporation | 7026 |
25 |
| Sony Corporation | 31138 |
20 |
| Sharp Kabushiki Kaisha | 18787 |
19 |
| Panasonic Corporation | 20166 |
16 |
| Konica Minolta, Inc. | 8681 |
16 |
| Canon Kabushiki Kaisha | 7046 |
15 |
| PFU Limited | 740 |
14 |
| Seiko Epson Corporation | 19281 |
13 |
| Toshiba TEC Corporation | 3784 |
13 |
| Kyocera Document Solutions Inc. | 5525 |
13 |
| Nikon Corporation | 7164 |
10 |
| Mitsubishi Electric Corporation | 45860 |
9 |
| FUJIFILM Business Innovation Corp. | 7576 |
9 |
| Other owners | 334 |