- All sections
- B - Performing operations; transporting
- B41F - Printing machines or presses
- B41F 1/20 - Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed for perfecting sheets, i.e. for printing on both sides of sheets
Patent holdings for IPC class B41F 1/20
Total number of patents in this class: 5
10-year publication summary
0
|
0
|
2
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Hewlett-Packard Development Company, L.P. | 28538 |
2 |
Hydra Management LLC | 15 |
1 |
Riso Kagaku Corporation | 666 |
1 |
Hydragraphix LLC | 34 |
1 |
Other owners | 0 |