Class D21D : TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
Subclass 1/38: Methods of beating or refining; Beaters of the Hollander type (knotter screens D21F) Methods of refining Other mills or refiners with horizontal shaft
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12215462 | Refiner | Jan 24, 22 | Feb 04, 25 | Aikawa Iron Works Co. Ltd. |
| 11261565 | Defibration processing device, and fibrous feedstock recycling device | Mar 27, 19 | Mar 01, 22 | SEIKO EPSON CORPORATION |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0296,736 | REFINER | Apr 26, 24 | Sep 05, 24 | Not available |
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