- All sections
- B - Performing operations; transporting
- B41J - Typewriters; selective printing mechanisms, i.e. mechanisms printing otherwise than from a forme; correction of typographical errors
- B41J 2/21 - Ink jet for multi-colour printing
Patent holdings for IPC class B41J 2/21
Total number of patents in this class: 3294
10-year publication summary
|
257
|
301
|
315
|
345
|
413
|
365
|
348
|
287
|
226
|
49
|
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 19240 |
572 |
| Canon Inc. | 36856 |
383 |
| Hewlett-Packard Development Company, L.P. | 29751 |
346 |
| Ricoh Company, Ltd. | 14053 |
221 |
| Brother Industries, Ltd. | 13284 |
213 |
| FUJIFILM Corporation | 25841 |
153 |
| Xerox Corporation | 6811 |
94 |
| Mimaki Engineering Co., Ltd. | 803 |
83 |
| Eastman Kodak Company | 4117 |
54 |
| Konica Minolta, Inc. | 8205 |
49 |
| Memjet Technology Ltd. | 868 |
47 |
| Riso Kagaku Corporation | 704 |
42 |
| Screen Holdings Co., Ltd. | 2183 |
42 |
| Kyocera Document Solutions Inc. | 5761 |
41 |
| Oce-Technologies B.V. | 495 |
33 |
| Electronics for Imaging, Inc. | 319 |
32 |
| Heidelberger Druckmaschinen AG | 509 |
31 |
| Canon Kabushiki Kaisha | 6683 |
27 |
| Agfa NV | 649 |
24 |
| Kateeva, Inc. | 369 |
23 |
| Other owners | 784 |