- 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: 211
10-year publication summary
|
17
|
26
|
40
|
33
|
29
|
12
|
9
|
7
|
8
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 36841 |
32 |
| Ricoh Company, Ltd. | 13266 |
20 |
| Seiko Epson Corporation | 18724 |
16 |
| Konica Minolta, Inc. | 8349 |
11 |
| Toshiba Corporation | 12017 |
9 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
9 |
| Brother Industries, Ltd. | 13000 |
8 |
| Toshiba TEC Corporation | 3877 |
8 |
| Kyocera Document Solutions Inc. | 5295 |
8 |
| FUJIFILM Corporation | 27102 |
7 |
| Eastman Kodak Company | 3444 |
5 |
| FUJIFILM Business Innovation Corp. | 7395 |
5 |
| Hewlett-Packard Development Company, L.P. | 28538 |
4 |
| Illumina, Inc. | 2771 |
4 |
| Contex A/S | 19 |
4 |
| Mitsubishi Electric Corporation | 43934 |
3 |
| Landa Corporation Ltd. | 223 |
3 |
| Screen Holdings Co., Ltd. | 2431 |
3 |
| Xerox Corporation | 7503 |
2 |
| Olympus Corporation | 13667 |
2 |
| Other owners | 48 |