- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 1/403 - Discrimination between the two tones in the picture signal of a two-tone original
Patent holdings for IPC class H04N 1/403
Total number of patents in this class: 49
10-year publication summary
|
5
|
2
|
5
|
5
|
3
|
0
|
2
|
2
|
2
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 36841 |
9 |
| United Services Automobile Association (USAA) | 2514 |
5 |
| Xerox Corporation | 7503 |
4 |
| Hewlett-Packard Development Company, L.P. | 28538 |
3 |
| Sharp Corporation | 10015 |
2 |
| Ricoh Company, Ltd. | 13266 |
2 |
| Brother Industries, Ltd. | 13000 |
2 |
| Eastman Kodak Company | 3444 |
2 |
| Konica Minolta Laboratory U.S.A., Inc. | 421 |
2 |
| PFU Limited | 707 |
2 |
| Tokyo Electron Limited | 11599 |
1 |
| Olympus Corporation | 13667 |
1 |
| Konica Minolta, Inc. | 8349 |
1 |
| Konica Minolta Business Technologies, Inc. | 1564 |
1 |
| Lexmark International, Inc. | 1793 |
1 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8635 |
1 |
| Kyocera Document Solutions Inc. | 5295 |
1 |
| BIO-key International, Inc. | 29 |
1 |
| Canon Finetech Inc. | 75 |
1 |
| IMDS America Inc. | 5 |
1 |
| Other owners | 6 |