- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 1/44 - Secrecy systems
Patent holdings for IPC class H04N 1/44
Total number of patents in this class: 1518
10-year publication summary
|
190
|
257
|
221
|
168
|
175
|
136
|
149
|
112
|
70
|
53
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 40623 |
326 |
| FUJIFILM Business Innovation Corp. | 7734 |
142 |
| Kyocera Document Solutions Inc. | 5740 |
111 |
| Ricoh Company, Ltd. | 13391 |
107 |
| Brother Industries, Ltd. | 12949 |
107 |
| Sharp Corporation | 10285 |
75 |
| Hewlett-Packard Development Company, L.P. | 25753 |
66 |
| Konica Minolta, Inc. | 8818 |
53 |
| Toshiba TEC Corporation | 3823 |
52 |
| Xerox Corporation | 6982 |
38 |
| Toshiba Corporation | 12514 |
32 |
| Seiko Epson Corporation | 19671 |
20 |
| Lexmark International, Inc. | 1650 |
18 |
| PFU Limited | 744 |
12 |
| Konica Minolta Business Technologies, Inc. | 1397 |
10 |
| Bold Limited | 109 |
10 |
| etherFAX, LLC | 30 |
10 |
| Samsung Electronics Co., Ltd. | 148077 |
9 |
| Fujitsu Limited | 17692 |
8 |
| Intel Corporation | 46921 |
7 |
| Other owners | 305 |