- All sections
- G - Physics
- G03G - Electrography; electrophotography; magnetography
- G03G 21/12 - Toner waste containers
Patent holdings for IPC class G03G 21/12
Total number of patents in this class: 475
10-year publication summary
|
43
|
31
|
38
|
42
|
44
|
49
|
36
|
32
|
27
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Brother Industries, Ltd. | 12908 |
165 |
| Canon Inc. | 38148 |
72 |
| Hewlett-Packard Development Company, L.P. | 27461 |
42 |
| Kyocera Document Solutions Inc. | 5366 |
38 |
| FUJIFILM Business Innovation Corp. | 7426 |
32 |
| Ricoh Company, Ltd. | 13216 |
31 |
| Sharp Corporation | 10191 |
18 |
| Toshiba TEC Corporation | 3692 |
13 |
| Lexmark International, Inc. | 1703 |
13 |
| Oki Electric Industry Co., Ltd. | 1600 |
8 |
| Konica Minolta, Inc. | 8535 |
6 |
| Konica Minolta Business Technologies, Inc. | 1464 |
5 |
| Print-Rite ? Unicorn Image Products Co., Ltd. of Zhuhai | 231 |
4 |
| Toshiba Corporation | 12051 |
3 |
| Canon Kabushiki Kaisha | 6938 |
3 |
| General Plastic Industrial Co., Ltd. | 44 |
2 |
| POSCO Co., Ltd. | 1302 |
2 |
| HP Printing Korea Co., Ltd. | 187 |
2 |
| Xerox Corporation | 7076 |
1 |
| Seiko Epson Corporation | 18989 |
1 |
| Other owners | 14 |