- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 1/401 - Compensating positionaly unequal response of the pick-up or reproducing head
Patent holdings for IPC class H04N 1/401
Total number of patents in this class: 221
10-year publication summary
|
26
|
40
|
33
|
29
|
12
|
9
|
7
|
10
|
12
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 40165 |
35 |
| Ricoh Company, Ltd. | 13276 |
22 |
| Seiko Epson Corporation | 19425 |
18 |
| Konica Minolta, Inc. | 8763 |
13 |
| Toshiba Corporation | 12376 |
9 |
| Brother Industries, Ltd. | 12954 |
9 |
| Panasonic Intellectual Property Management Co., Ltd. | 31598 |
9 |
| Kyocera Document Solutions Inc. | 5654 |
9 |
| FUJIFILM Corporation | 29458 |
8 |
| Toshiba TEC Corporation | 3802 |
8 |
| Illumina, Inc. | 3358 |
5 |
| FUJIFILM Business Innovation Corp. | 7604 |
5 |
| Hewlett-Packard Development Company, L.P. | 25850 |
4 |
| Eastman Kodak Company | 2873 |
4 |
| Contex A/S | 17 |
4 |
| Mitsubishi Electric Corporation | 46249 |
3 |
| Landa Corporation Ltd. | 257 |
3 |
| Screen Holdings Co., Ltd. | 2839 |
3 |
| Xerox Corporation | 6999 |
2 |
| Olympus Corporation | 13167 |
2 |
| Other owners | 46 |