- 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: 848
10-year publication summary
|
89
|
105
|
72
|
46
|
40
|
39
|
17
|
10
|
9
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 42406 |
124 |
| Ricoh Company, Ltd. | 13299 |
45 |
| NEC Corporation | 36702 |
34 |
| Olympus Corporation | 13003 |
34 |
| Hewlett-Packard Development Company, L.P. | 25337 |
33 |
| FUJIFILM Corporation | 30294 |
33 |
| Brother Industries, Ltd. | 12856 |
29 |
| Sony Corporation | 30368 |
20 |
| Xerox Corporation | 4713 |
19 |
| Sharp Kabushiki Kaisha | 18623 |
19 |
| Konica Minolta, Inc. | 9040 |
17 |
| Panasonic Corporation | 19530 |
15 |
| Canon Kabushiki Kaisha | 7237 |
15 |
| Seiko Epson Corporation | 20022 |
14 |
| PFU Limited | 777 |
14 |
| Toshiba TEC Corporation | 3898 |
13 |
| Kyocera Document Solutions Inc. | 6095 |
13 |
| Mitsubishi Electric Corporation | 47655 |
9 |
| FUJIFILM Business Innovation Corp. | 7858 |
9 |
| Sharp Corporation | 10471 |
8 |
| Other owners | 331 |