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Publication of NL112069CpublicationCriticalpatent/NL112069C/xx
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
D21C3/22—Other features of pulping processes
D21C3/26—Multistage processes
D21C3/266—Multistage processes the same pulping agent being used in all stages
H—ELECTRICITY
H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
H10D99/00—Subject matter not provided for in other groups of this subclass