- All sections
- B - Performing operations; transporting
- B41F - Printing machines or presses
- B41F 3/28 - Proof-print presses for relief printing, lithography or intaglio printing, i.e. presses for checking accuracy of printing surfaces
Patent holdings for IPC class B41F 3/28
Total number of patents in this class: 4
10-year publication summary
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1
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0
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0
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1
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0
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0
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0
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0
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0
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0
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Eastman Kodak Company | 3444 |
1 |
| Boe Technology Group Co., Ltd. | 35384 |
1 |
| Chengdu BOE Optoelectronics Technology Co., Ltd. | 4805 |
1 |
| Harper Corporation of America | 7 |
1 |
| Other owners | 0 |