Class D21D : TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
Subclass 1/36: Methods of beating or refining; Beaters of the Hollander type (knotter screens D21F) Methods of refining Other mills or refiners with vertical shaft
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11274396 | Method for producing nanofibrillar cellulose and nanofibrillar cellulose product | May 13, 20 | Mar 15, 22 | UPM Kymmene Corporation |
| 10697116 | Method for producing nanofibrillar cellulose and nanofibrillar cellulose product | Mar 27, 15 | Jun 30, 20 | UPM Kymmene Corporation |
| 9739011 | Method for producing nanofibrillar cellulose | Nov 14, 12 | Aug 22, 17 | UPM-KYMMENE CORPORATION |
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