- 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 2/055 - Devices for absorbing or preventing back-pressure
Patent holdings for IPC class B41J 2/055
Total number of patents in this class: 343
10-year publication summary
|
21
|
10
|
9
|
19
|
10
|
23
|
8
|
2
|
3
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 18724 |
58 |
| Konica Minolta, Inc. | 8349 |
35 |
| Kyocera Corporation | 12735 |
30 |
| Ricoh Company, Ltd. | 13266 |
26 |
| Konica Minolta Holdings, Inc. | 1086 |
26 |
| Brother Industries, Ltd. | 13000 |
19 |
| Panasonic Corporation | 20786 |
18 |
| Sharp Kabushiki Kaisha | 18957 |
16 |
| Hewlett-Packard Development Company, L.P. | 28538 |
14 |
| FUJIFILM Corporation | 27102 |
10 |
| Canon Kabushiki Kaisha | 6884 |
10 |
| Konica Minolta Ij Technologies, Inc. | 56 |
8 |
| NGK Insulators, Ltd. | 4589 |
7 |
| FUJIFILM Dimatix, Inc. | 331 |
7 |
| SII Printek Inc. | 136 |
6 |
| Toshiba TEC Corporation | 3877 |
4 |
| Tokyo Institute of Technology | 1367 |
4 |
| Mimaki Engineering Co., Ltd. | 799 |
3 |
| ULVAC, Inc. | 1448 |
3 |
| Brother Kogyo Kabushikikaisha | 1709 |
3 |
| Other owners | 36 |