- All sections
- G - Physics
- G03G - Electrographyelectrophotographymagnetography
- G03G 21/04 - Preventing copies being made of an original
Patent holdings for IPC class G03G 21/04
Total number of patents in this class: 72
10-year publication summary
|
1
|
6
|
4
|
8
|
4
|
2
|
5
|
0
|
3
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 39538 |
9 |
| Ricoh Company, Ltd. | 13209 |
5 |
| Kyocera Document Solutions Inc. | 5525 |
5 |
| Viavi Solutions Inc. | 1427 |
4 |
| Xerox Corporation | 7026 |
3 |
| Hewlett-Packard Development Company, L.P. | 25940 |
3 |
| Hydragraphix LLC | 36 |
3 |
| Toshiba Corporation | 12300 |
2 |
| Eastman Kodak Company | 2918 |
2 |
| Toshiba TEC Corporation | 3784 |
2 |
| Konica Minolta, Inc. | 8681 |
2 |
| Dai Nippon Printing Co., Ltd. | 4061 |
2 |
| Oki Electric Industry Co., Ltd. | 1594 |
2 |
| Advanced Track & Trace | 40 |
2 |
| Document Security Systems, Inc. | 29 |
2 |
| Ingenia Holdings (UK) Limited | 16 |
2 |
| SICPA Holding SA | 902 |
2 |
| Canon Kabushiki Kaisha | 7046 |
2 |
| Sharp Kabushiki Kaisha | 18787 |
2 |
| FUJIFILM Business Innovation Corp. | 7576 |
2 |
| Other owners | 14 |