- All sections
- G - Physics
- G03G - Electrographyelectrophotographymagnetography
- G03G 9/09 - Colouring agents for toner particles
Patent holdings for IPC class G03G 9/09
Total number of patents in this class: 839
10-year publication summary
|
70
|
120
|
110
|
60
|
75
|
47
|
51
|
31
|
36
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 39660 |
120 |
| FUJIFILM Business Innovation Corp. | 7580 |
119 |
| Xerox Corporation | 7021 |
74 |
| Ricoh Company, Ltd. | 13198 |
64 |
| Canon Kabushiki Kaisha | 7051 |
48 |
| Zeon Corporation | 4079 |
47 |
| Toshiba TEC Corporation | 3783 |
45 |
| Konica Minolta, Inc. | 8701 |
37 |
| Hewlett-Packard Development Company, L.P. | 25910 |
20 |
| Eastman Kodak Company | 2908 |
20 |
| Konica Minolta Business Technologies, Inc. | 1425 |
20 |
| Toshiba Corporation | 12317 |
19 |
| Oki Electric Industry Co., Ltd. | 1596 |
19 |
| Kao Corporation | 4959 |
12 |
| Mitsubishi Chemical Corporation | 4489 |
11 |
| FUJIFILM Corporation | 29295 |
9 |
| Kyocera Document Solutions Inc. | 5544 |
8 |
| Lexmark International, Inc. | 1671 |
7 |
| Cabot Corporation | 551 |
7 |
| Dainichiseika Color & Chemicals Mfg. Co., Ltd. | 369 |
6 |
| Other owners | 127 |