Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Usines de Melle SA
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Usines de Melle SA
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Application filed by Usines de Melle SAfiledCriticalUsines de Melle SA
Application grantedgrantedCritical
Publication of FR866879ApublicationCriticalpatent/FR866879A/fr
D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C1/00—Pretreatment of the finely-divided materials before digesting
D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
FR866879D1940-05-141940-05-14Perfectionnements à la fabrication des pâtes de cellulose à partir du bois et autres végétaux
ExpiredFR866879A
(fr)