- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 1/40 - Picture signal circuits
Patent holdings for IPC class H04N 1/40
Total number of patents in this class: 1910
10-year publication summary
|
155
|
160
|
147
|
100
|
77
|
64
|
48
|
28
|
30
|
10
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 40015 |
250 |
| Brother Industries, Ltd. | 12955 |
141 |
| Ricoh Company, Ltd. | 13279 |
118 |
| Hewlett-Packard Development Company, L.P. | 25869 |
104 |
| Xerox Corporation | 7000 |
78 |
| Seiko Epson Corporation | 19371 |
62 |
| FUJIFILM Business Innovation Corp. | 7594 |
60 |
| Kyocera Document Solutions Inc. | 5611 |
51 |
| Konica Minolta, Inc. | 8751 |
48 |
| Toshiba TEC Corporation | 3797 |
46 |
| Sharp Corporation | 10255 |
43 |
| Toshiba Corporation | 12350 |
42 |
| Konica Minolta Business Technologies, Inc. | 1416 |
38 |
| FUJIFILM Corporation | 29424 |
31 |
| Tungsten Automation Corporation | 210 |
30 |
| Eastman Kodak Company | 2886 |
21 |
| PFU Limited | 743 |
18 |
| NEC Corporation | 35734 |
17 |
| Lutron Technology Company LLC | 2552 |
17 |
| Sony Corporation | 31028 |
15 |
| Other owners | 680 |