D21C

Watch

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Description

PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR

Subclasses

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Subclass Title
1/00 Pretreatment of the finely-divided materials before digesting (of waste paper D21C 5/02)
1/02 Pretreatment of the finely-divided materials before digesting (of waste paper D21C 5/02) with water or steam
1/04 Pretreatment of the finely-divided materials before digesting (of waste paper D21C 5/02) with acid reacting compounds
1/06 Pretreatment of the finely-divided materials before digesting (of waste paper D21C 5/02) with alkaline reacting compounds
1/08 Pretreatment of the finely-divided materials before digesting (of waste paper D21C 5/02) with oxygen-generating compounds

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Recent Patents

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Recent Publications

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Patents Issued To Date - By Filing Year

Average Time to Issuance

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