Title:
Semi-chemical pulping process
United States Patent 2862813

Inventors:
Clarence, Birdseye
Publication Date:
12/02/1958
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Assignee:
Process, Evaluation Devel
Primary Class:
Other Classes:
162/149, 162/96
International Classes:
D21B1/12; D21C3/24; D21B1/00; D21C3/00
US Patent References:
2215353Process of making fiberboard
2425024Apparatus for producing pulp from cellulosic material
2454534Process for defibering lignocellulose while subjected to steam and alkali-metal hydroxide
2542801Continuous digestion apparatus for the production of highly purified cellulose
2673690Method for the digestion of cellulose-bearing material