The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 1987
Filed:
Oct. 04, 1985
Applicant:
Inventors:
Nils J Hartler, Lidingo, SE;
Karl-Erik Lekander, Alings.ang.s, SE;
Lars T Sjodin, Solna, SE;
Per J Mjoberg, Ekero, SE;
Assignee:
Sunds Defibrator Aktiebolag, , SE;
Primary Examiner:
Int. Cl.
CPC ...
D21C / ; D21C / ;
U.S. Cl.
CPC ...
162 45 ; 162 39 ; 162 60 ; 162 82 ; 162 86 ;
Abstract
A modified batch cooking technique for making sulfate pulp with a high degree of delignification or with a normal degree of delignification but with increased pulp viscosity. This is effected by one or several displacements of the liquor in the digester with liquor of the same temperature as the cooking liquor but with a lower lignin content.