- All sections
- B - Performing operationstransporting
- B41M - Printing, duplicating, marking, or copying processescolour printing
- B41M 5/333 - Colour developing components therefor, e.g. acidic compounds
Patent holdings for IPC class B41M 5/333
Total number of patents in this class: 334
10-year publication summary
|
28
|
21
|
32
|
20
|
22
|
28
|
28
|
24
|
27
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Paper Industries Co., Ltd. | 812 |
29 |
| Nippon Soda Co., Ltd. | 883 |
26 |
| Mitsubishi HiTec Paper Europe GmbH | 71 |
25 |
| Papierfabrik August Koehler SE | 46 |
21 |
| Oji Holdings Corporation | 702 |
20 |
| Nippon Kayaku Kabushiki Kaisha | 1429 |
13 |
| Ricoh Company, Ltd. | 13216 |
12 |
| Appvion, LLC | 66 |
12 |
| Mitsubishi Chemical Corporation | 4447 |
11 |
| Agfa-Gevaert | 279 |
10 |
| Datalase Ltd. | 114 |
10 |
| Sony Group Corporation | 12664 |
10 |
| Sanko Co., Ltd. | 53 |
9 |
| Nicca Chemical Co., Ltd. | 130 |
8 |
| Sony Corporation | 31541 |
7 |
| Segan Industries, Inc. | 30 |
7 |
| Agfa NV | 653 |
7 |
| Osaka Sealing Printing Co., Ltd. | 34 |
5 |
| FUJIFILM Corporation | 28805 |
4 |
| API Corporation | 228 |
4 |
| Other owners | 84 |