- All sections
- G - Physics
- G03G - Electrography; electrophotography; magnetography
- G03G 21/00 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge
Patent holdings for IPC class G03G 21/00
Total number of patents in this class: 2819
10-year publication summary
|
232
|
284
|
232
|
256
|
215
|
242
|
202
|
179
|
138
|
45
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 36841 |
484 |
| Kyocera Document Solutions Inc. | 5295 |
286 |
| Ricoh Company, Ltd. | 13266 |
271 |
| Brother Industries, Ltd. | 13000 |
251 |
| Hewlett-Packard Development Company, L.P. | 28538 |
201 |
| FUJIFILM Business Innovation Corp. | 7395 |
166 |
| Canon Kabushiki Kaisha | 6884 |
151 |
| Konica Minolta, Inc. | 8349 |
143 |
| Toshiba TEC Corporation | 3877 |
88 |
| Brother Kogyo Kabushikikaisha | 1709 |
77 |
| Toshiba Corporation | 12017 |
76 |
| Sharp Corporation | 10015 |
57 |
| Konica Minolta Business Technologies, Inc. | 1564 |
55 |
| Xerox Corporation | 7503 |
51 |
| HP Indigo B.V. | 540 |
46 |
| Lexmark International, Inc. | 1793 |
45 |
| Oki Electric Industry Co., Ltd. | 1652 |
27 |
| Sharp Kabushiki Kaisha | 18957 |
24 |
| Sumitomo Riko Company Limited | 962 |
21 |
| SYNZTEC Co., Ltd. | 60 |
18 |
| Other owners | 281 |