- 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: 979
10-year publication summary
|
96
|
92
|
78
|
109
|
93
|
70
|
54
|
42
|
44
|
21
|
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 36686 |
171 |
| Hewlett-Packard Development Company, L.P. | 29429 |
106 |
| Xerox Corporation | 7853 |
61 |
| Ricoh Company, Ltd. | 13592 |
51 |
| Seiko Epson Corporation | 19017 |
49 |
| FUJIFILM Corporation | 26457 |
38 |
| Brother Industries, Ltd. | 13163 |
36 |
| Eastman Kodak Company | 3761 |
20 |
| Kyocera Document Solutions Inc. | 5490 |
19 |
| Screen Holdings Co., Ltd. | 2303 |
15 |
| Sharp Corporation | 10480 |
13 |
| Beijing Founder Electronics Co., Ltd. | 150 |
13 |
| Peking University | 1065 |
13 |
| Konica Minolta, Inc. | 8264 |
10 |
| Konica Minolta Business Technologies, Inc. | 1643 |
10 |
| Kateeva, Inc. | 369 |
10 |
| Agfa NV | 643 |
10 |
| Canon Kabushiki Kaisha | 6837 |
10 |
| Peking University Founder Group Co., Ltd. | 157 |
9 |
| FUJIFILM Business Innovation Corp. | 7411 |
9 |
| Other owners | 306 |