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Raoul Pictet & F Tharaldsen As
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Raoul Pictet & F Tharaldsen As
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Application filed by Raoul Pictet & F Tharaldsen AsfiledCriticalRaoul Pictet & F Tharaldsen As
Application grantedgrantedCritical
Publication of FR616229ApublicationCriticalpatent/FR616229A/fr
D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C3/00—Pulping cellulose-containing materials
D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
FR616229D1925-05-201926-05-15Procédé nouveau pour la fabrication de la pâte de bois
ExpiredFR616229A
(fr)