- 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: 947
10-year publication summary
|
92
|
78
|
109
|
93
|
70
|
54
|
42
|
45
|
23
|
10
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 36841 |
169 |
| Hewlett-Packard Development Company, L.P. | 28538 |
106 |
| Xerox Corporation | 7503 |
55 |
| Ricoh Company, Ltd. | 13266 |
54 |
| Seiko Epson Corporation | 18724 |
45 |
| Brother Industries, Ltd. | 13000 |
37 |
| FUJIFILM Corporation | 27102 |
36 |
| Eastman Kodak Company | 3444 |
19 |
| Kyocera Document Solutions Inc. | 5295 |
19 |
| Screen Holdings Co., Ltd. | 2431 |
15 |
| Beijing Founder Electronics Co., Ltd. | 145 |
11 |
| Peking University | 1111 |
11 |
| Sharp Corporation | 10015 |
10 |
| Konica Minolta, Inc. | 8349 |
10 |
| Konica Minolta Business Technologies, Inc. | 1564 |
10 |
| Kateeva, Inc. | 376 |
10 |
| Agfa NV | 642 |
10 |
| Canon Kabushiki Kaisha | 6884 |
10 |
| Peking University Founder Group Co., Ltd. | 152 |
9 |
| Esko Software BV | 26 |
8 |
| Other owners | 293 |