- 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: 220
10-year publication summary
|
26
|
40
|
33
|
29
|
12
|
9
|
7
|
11
|
12
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 39713 |
34 |
| Ricoh Company, Ltd. | 13247 |
22 |
| Seiko Epson Corporation | 19319 |
18 |
| Konica Minolta, Inc. | 8704 |
13 |
| Toshiba Corporation | 12320 |
9 |
| Brother Industries, Ltd. | 12958 |
9 |
| Panasonic Intellectual Property Management Co., Ltd. | 31221 |
9 |
| Kyocera Document Solutions Inc. | 5555 |
9 |
| FUJIFILM Corporation | 29305 |
8 |
| Toshiba TEC Corporation | 3781 |
8 |
| Illumina, Inc. | 3338 |
5 |
| FUJIFILM Business Innovation Corp. | 7580 |
5 |
| Hewlett-Packard Development Company, L.P. | 25903 |
4 |
| Eastman Kodak Company | 2910 |
4 |
| Contex A/S | 17 |
4 |
| Mitsubishi Electric Corporation | 45962 |
3 |
| Landa Corporation Ltd. | 256 |
3 |
| Screen Holdings Co., Ltd. | 2798 |
3 |
| Xerox Corporation | 7021 |
2 |
| Olympus Corporation | 13182 |
2 |
| Other owners | 46 |