- All sections
- B - Performing operationstransporting
- B41M - Printing, duplicating, marking, or copying processescolour printing
- B41M 5/327 - Organic colour formers, e.g. leuco dyes with a lactone or lactam ring
Patent holdings for IPC class B41M 5/327
Total number of patents in this class: 119
10-year publication summary
|
7
|
13
|
12
|
9
|
7
|
5
|
5
|
10
|
6
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi HiTec Paper Europe GmbH | 68 |
17 |
| Papierfabrik August Koehler SE | 41 |
15 |
| Nippon Soda Co., Ltd. | 883 |
8 |
| Ricoh Company, Ltd. | 13318 |
7 |
| Appvion, LLC | 64 |
7 |
| Agfa-Gevaert | 296 |
6 |
| Nippon Kayaku Kabushiki Kaisha | 1465 |
5 |
| Nippon Paper Industries Co., Ltd. | 839 |
4 |
| Chromatic Technologies, Inc. | 72 |
3 |
| Datalase Ltd. | 108 |
3 |
| Sony Group Corporation | 15340 |
3 |
| Sony Corporation | 30312 |
2 |
| FUJIFILM Corporation | 30340 |
2 |
| Ecole Polytechnique Federale de Lausanne (epfl) | 1598 |
2 |
| Kabushiki Kaisha Pilot Corporation | 345 |
2 |
| Oji Holdings Corporation | 784 |
2 |
| The Pilot Ink Co., Ltd. | 87 |
2 |
| The University of Hong Kong | 827 |
2 |
| Agfa NV | 661 |
2 |
| Sony Europe B.V. | 1228 |
2 |
| Other owners | 23 |