- 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: 247
10-year publication summary
|
37
|
34
|
34
|
23
|
11
|
24
|
14
|
8
|
1
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 44134 |
46 |
| Hewlett-Packard Development Company, L.P. | 25174 |
41 |
| Ricoh Company, Ltd. | 13334 |
16 |
| Seiko Epson Corporation | 20365 |
14 |
| FUJIFILM Corporation | 30628 |
11 |
| Xerox Corporation | 4386 |
9 |
| Brother Industries, Ltd. | 12836 |
7 |
| Konica Minolta, Inc. | 9159 |
7 |
| Kyocera Document Solutions Inc. | 6323 |
7 |
| HP Indigo B.V. | 529 |
5 |
| e Ink Corporation | 1557 |
4 |
| Screen Holdings Co., Ltd. | 3198 |
4 |
| SnapTrack, Inc. | 512 |
4 |
| FUJIFILM Business Innovation Corp. | 7970 |
4 |
| Peridot Print LLC | 1325 |
4 |
| Ecole Polytechnique Federale de Lausanne (epfl) | 1614 |
3 |
| Heidelberger Druckmaschinen AG | 500 |
3 |
| Toyo Seikan Co., Ltd. | 624 |
3 |
| Qualcomm Mems Technologies, Inc. | 585 |
2 |
| Toppan Printing Co., Ltd. | 2081 |
2 |
| Other owners | 51 |