- 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: 248
10-year publication summary
|
37
|
34
|
34
|
23
|
11
|
24
|
14
|
8
|
1
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 42406 |
46 |
| Hewlett-Packard Development Company, L.P. | 25337 |
41 |
| Ricoh Company, Ltd. | 13299 |
17 |
| Seiko Epson Corporation | 20022 |
14 |
| FUJIFILM Corporation | 30294 |
11 |
| Xerox Corporation | 4713 |
10 |
| Brother Industries, Ltd. | 12856 |
7 |
| Konica Minolta, Inc. | 9040 |
7 |
| Kyocera Document Solutions Inc. | 6095 |
7 |
| HP Indigo B.V. | 529 |
5 |
| e Ink Corporation | 1547 |
4 |
| Screen Holdings Co., Ltd. | 3105 |
4 |
| SnapTrack, Inc. | 535 |
4 |
| Peridot Print LLC | 1310 |
4 |
| Ecole Polytechnique Federale de Lausanne (epfl) | 1588 |
3 |
| Heidelberger Druckmaschinen AG | 498 |
3 |
| Toyo Seikan Co., Ltd. | 614 |
3 |
| FUJIFILM Business Innovation Corp. | 7858 |
3 |
| Qualcomm Mems Technologies, Inc. | 600 |
2 |
| Sharp Corporation | 10471 |
2 |
| Other owners | 51 |