- 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: 1029
10-year publication summary
|
96
|
92
|
78
|
109
|
93
|
71
|
54
|
41
|
40
|
7
|
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 36837 |
173 |
| Hewlett-Packard Development Company, L.P. | 29764 |
112 |
| Xerox Corporation | 6818 |
75 |
| Seiko Epson Corporation | 19227 |
58 |
| Ricoh Company, Ltd. | 14097 |
52 |
| FUJIFILM Corporation | 25767 |
38 |
| Brother Industries, Ltd. | 13288 |
37 |
| Eastman Kodak Company | 4130 |
22 |
| Kyocera Document Solutions Inc. | 5750 |
20 |
| Screen Holdings Co., Ltd. | 2157 |
15 |
| Sharp Corporation | 11072 |
14 |
| Beijing Founder Electronics Co., Ltd. | 170 |
14 |
| Peking University | 986 |
14 |
| Konica Minolta, Inc. | 8207 |
10 |
| Konica Minolta Business Technologies, Inc. | 1728 |
10 |
| Canon Kabushiki Kaisha | 6680 |
10 |
| Kateeva, Inc. | 370 |
9 |
| Peking University Founder Group Co., Ltd. | 157 |
9 |
| Agfa NV | 650 |
9 |
| FUJIFILM Business Innovation Corp. | 7548 |
9 |
| Other owners | 319 |