- 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: 1487
10-year publication summary
|
129
|
191
|
257
|
221
|
168
|
175
|
136
|
149
|
113
|
25
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 36841 |
309 |
| FUJIFILM Business Innovation Corp. | 7395 |
135 |
| Kyocera Document Solutions Inc. | 5295 |
120 |
| Ricoh Company, Ltd. | 13266 |
105 |
| Brother Industries, Ltd. | 13000 |
98 |
| Hewlett-Packard Development Company, L.P. | 28538 |
67 |
| Sharp Corporation | 10015 |
67 |
| Toshiba TEC Corporation | 3877 |
57 |
| Konica Minolta, Inc. | 8349 |
52 |
| Xerox Corporation | 7503 |
37 |
| Toshiba Corporation | 12017 |
36 |
| Seiko Epson Corporation | 18724 |
17 |
| PFU Limited | 707 |
12 |
| etherFAX, LLC | 28 |
11 |
| Konica Minolta Business Technologies, Inc. | 1564 |
10 |
| Lexmark International, Inc. | 1793 |
10 |
| Samsung Electronics Co., Ltd. | 131630 |
9 |
| Bold Limited | 82 |
9 |
| Intel Corporation | 45621 |
8 |
| Fujitsu Limited | 19265 |
8 |
| Other owners | 310 |