- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 1/405 - Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
Patent holdings for IPC class H04N 1/405
Total number of patents in this class: 847
10-year publication summary
|
109
|
93
|
70
|
54
|
43
|
45
|
26
|
18
|
13
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 44051 |
169 |
| Hewlett-Packard Development Company, L.P. | 25170 |
80 |
| Ricoh Company, Ltd. | 13333 |
46 |
| Seiko Epson Corporation | 20337 |
36 |
| Brother Industries, Ltd. | 12830 |
34 |
| FUJIFILM Corporation | 30594 |
32 |
| Xerox Corporation | 4386 |
30 |
| Kyocera Document Solutions Inc. | 6308 |
17 |
| Peridot Print LLC | 1325 |
17 |
| Eastman Kodak Company | 2589 |
16 |
| Screen Holdings Co., Ltd. | 3187 |
13 |
| Agfa NV | 671 |
11 |
| Sharp Corporation | 10821 |
10 |
| Konica Minolta, Inc. | 9150 |
10 |
| Konica Minolta Business Technologies, Inc. | 1314 |
10 |
| Kateeva, Inc. | 394 |
10 |
| Esko Software BV | 38 |
9 |
| Beijing Founder Electronics Co., Ltd. | 129 |
7 |
| Peking University | 1467 |
7 |
| Canon Kabushiki Kaisha | 7360 |
7 |
| Other owners | 276 |