- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 1/42 - Systems for two-way working
Patent holdings for IPC class H04N 1/42
Total number of patents in this class: 45
10-year publication summary
|
4
|
3
|
4
|
2
|
1
|
2
|
5
|
1
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Open Text SA ULC | 536 |
10 |
| Canon Inc. | 44134 |
8 |
| Brother Industries, Ltd. | 12836 |
3 |
| Hewlett-Packard Development Company, L.P. | 25174 |
2 |
| Ricoh Company, Ltd. | 13334 |
2 |
| ZTE Corporation | 44288 |
2 |
| Xerox Corporation | 4386 |
1 |
| NEC Corporation | 37227 |
1 |
| Seiko Epson Corporation | 20365 |
1 |
| Mitsubishi Electric Corporation | 48236 |
1 |
| Kyocera Document Solutions Inc. | 6323 |
1 |
| Nokia Technologies Oy | 21548 |
1 |
| Digital Ally, Inc. | 73 |
1 |
| Hitachi America, Ltd. | 24 |
1 |
| Nokia Inc. | 1079 |
1 |
| OmniVision Technologies, Inc. | 1603 |
1 |
| South China University of Technology | 1916 |
1 |
| HUDDLE ROOM TECHNOLOGY S.r.l. | 14 |
1 |
| ORBI, Inc. | 2 |
1 |
| Change Healthcare Holdings, LLC | 215 |
1 |
| Other owners | 4 |