- All sections
- B - Performing operationstransporting
- B41M - Printing, duplicating, marking, or copying processescolour printing
- B41M 5/136 - Organic colour formers, e.g. leuco dyes
Patent holdings for IPC class B41M 5/136
Total number of patents in this class: 10
10-year publication summary
|
2
|
1
|
1
|
0
|
0
|
0
|
1
|
0
|
1
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Active Device Development Limited | 4 |
2 |
| Ricoh Company, Ltd. | 13423 |
1 |
| Chromatic Technologies, Inc. | 72 |
1 |
| Crayola LLC | 199 |
1 |
| Datalase Ltd. | 105 |
1 |
| Nocopi Technologies, Inc. | 7 |
1 |
| University of Washington | 2487 |
1 |
| Glatfelter Corporation | 56 |
1 |
| Polaroid IP B.V. | 176 |
1 |
| Other owners | 0 |