- All sections
- G - Physics
- G03G - Electrography; electrophotography; magnetography
- G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge
Patent holdings for IPC class G03G 21/18
Total number of patents in this class: 3643
10-year publication summary
|
285
|
279
|
332
|
312
|
293
|
420
|
344
|
294
|
273
|
82
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 36841 |
1105 |
| Brother Industries, Ltd. | 13000 |
1031 |
| FUJIFILM Business Innovation Corp. | 7395 |
185 |
| Hewlett-Packard Development Company, L.P. | 28538 |
167 |
| Lexmark International, Inc. | 1793 |
148 |
| Ricoh Company, Ltd. | 13266 |
134 |
| Canon Kabushiki Kaisha | 6884 |
127 |
| Brother Kogyo Kabushikikaisha | 1709 |
111 |
| Kyocera Document Solutions Inc. | 5295 |
98 |
| Print-Rite ? Unicorn Image Products Co., Ltd. of Zhuhai | 237 |
59 |
| Mitsubishi Chemical Corporation | 4313 |
38 |
| Ninestar Corporation | 55 |
33 |
| Toshiba TEC Corporation | 3877 |
30 |
| Oki Electric Industry Co., Ltd. | 1652 |
30 |
| Sharp Corporation | 10015 |
24 |
| Zhuhai Pantum Electronics Co., Ltd. | 179 |
21 |
| Jiangxi Yibo E-Tech Co., Ltd. | 32 |
20 |
| Static Control Components, Inc. | 86 |
16 |
| Mitsubishi Rayon Co., Ltd. | 1003 |
15 |
| Apex Technology Co., Ltd. | 23 |
15 |
| Other owners | 236 |