- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 1/52 - Circuits or arrangements for halftone screening
Patent holdings for IPC class H04N 1/52
Total number of patents in this class: 264
10-year publication summary
|
41
|
37
|
34
|
34
|
23
|
11
|
24
|
14
|
8
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 38296 |
47 |
| Hewlett-Packard Development Company, L.P. | 27448 |
45 |
| Ricoh Company, Ltd. | 13230 |
19 |
| Seiko Epson Corporation | 19020 |
14 |
| Xerox Corporation | 7073 |
13 |
| FUJIFILM Corporation | 28841 |
12 |
| Brother Industries, Ltd. | 12930 |
7 |
| Konica Minolta, Inc. | 8558 |
7 |
| Kyocera Document Solutions Inc. | 5388 |
7 |
| HP Indigo B.V. | 529 |
5 |
| e Ink Corporation | 1432 |
4 |
| Screen Holdings Co., Ltd. | 2650 |
4 |
| SnapTrack, Inc. | 603 |
4 |
| Toyo Seikan Co., Ltd. | 567 |
4 |
| Agfa Graphics NV | 294 |
3 |
| Ecole Polytechnique Federale de Lausanne (epfl) | 1505 |
3 |
| Heidelberger Druckmaschinen AG | 471 |
3 |
| Qualcomm Mems Technologies, Inc. | 628 |
2 |
| Sharp Corporation | 10201 |
2 |
| Toppan Printing Co., Ltd. | 2156 |
2 |
| Other owners | 57 |