- 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
|
6
|
| 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 | 66 |
17 |
| Papierfabrik August Koehler SE | 40 |
15 |
| Nippon Soda Co., Ltd. | 885 |
8 |
| Ricoh Company, Ltd. | 13333 |
7 |
| Appvion, LLC | 66 |
7 |
| Agfa-Gevaert | 299 |
6 |
| Nippon Kayaku Kabushiki Kaisha | 1462 |
5 |
| Datalase Ltd. | 106 |
4 |
| Nippon Paper Industries Co., Ltd. | 851 |
4 |
| Chromatic Technologies, Inc. | 72 |
3 |
| Sony Group Corporation | 15822 |
3 |
| Sony Corporation | 30111 |
2 |
| FUJIFILM Corporation | 30594 |
2 |
| Ecole Polytechnique Federale de Lausanne (epfl) | 1614 |
2 |
| Kabushiki Kaisha Pilot Corporation | 355 |
2 |
| Oji Holdings Corporation | 800 |
2 |
| The Pilot Ink Co., Ltd. | 86 |
2 |
| The University of Hong Kong | 835 |
2 |
| Agfa NV | 671 |
2 |
| Sony Europe B.V. | 1225 |
2 |
| Other owners | 22 |