- All sections
- G - Physics
- G03G - Electrographyelectrophotographymagnetography
- G03G 15/09 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
Patent holdings for IPC class G03G 15/09
Total number of patents in this class: 486
10-year publication summary
|
46
|
36
|
37
|
24
|
26
|
30
|
25
|
18
|
22
|
29
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 44285 |
138 |
| Kyocera Document Solutions Inc. | 6360 |
74 |
| Ricoh Company, Ltd. | 13386 |
45 |
| FUJIFILM Business Innovation Corp. | 8039 |
39 |
| Hewlett-Packard Development Company, L.P. | 25139 |
22 |
| Konica Minolta, Inc. | 9176 |
21 |
| Eastman Kodak Company | 2577 |
18 |
| Toshiba TEC Corporation | 3912 |
18 |
| Konica Minolta Business Technologies, Inc. | 1312 |
15 |
| Canon Kabushiki Kaisha | 7387 |
15 |
| Lexmark International, Inc. | 1531 |
14 |
| Brother Industries, Ltd. | 12827 |
10 |
| Kyocera Mita Corporation | 118 |
9 |
| Toshiba Corporation | 12726 |
8 |
| Sharp Corporation | 10868 |
7 |
| Xerox Corporation | 4379 |
4 |
| Ericsson | 23055 |
3 |
| Hitachi Metals, Ltd. | 1822 |
2 |
| P.M. Giken Inc. | 2 |
2 |
| DG Press Holding B.V. | 2 |
2 |
| Other owners | 20 |