- All sections
- G - Physics
- G03G - Electrography; electrophotography; magnetography
- G03G 21/20 - Humidity or temperature control
Patent holdings for IPC class G03G 21/20
Total number of patents in this class: 1057
10-year publication summary
109
|
114
|
93
|
106
|
94
|
105
|
78
|
93
|
65
|
29
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Canon Inc. | 36841 |
258 |
Ricoh Company, Ltd. | 13266 |
112 |
FUJIFILM Business Innovation Corp. | 7395 |
112 |
Kyocera Document Solutions Inc. | 5295 |
109 |
Hewlett-Packard Development Company, L.P. | 28538 |
82 |
Brother Industries, Ltd. | 13000 |
70 |
Konica Minolta, Inc. | 8349 |
69 |
Sharp Corporation | 10015 |
49 |
Toshiba TEC Corporation | 3877 |
48 |
Toshiba Corporation | 12017 |
25 |
Konica Minolta Business Technologies, Inc. | 1564 |
21 |
Lexmark International, Inc. | 1793 |
13 |
Xerox Corporation | 7503 |
11 |
Oki Electric Industry Co., Ltd. | 1652 |
9 |
Kyocera Mita Corporation | 268 |
6 |
Canon Kabushiki Kaisha | 6884 |
6 |
Hewlett-Packard Indigo B.V. | 255 |
5 |
Oce-Technologies B.V. | 475 |
5 |
HP Indigo B.V. | 540 |
5 |
Sharp Kabushiki Kaisha | 18957 |
4 |
Other owners | 38 |