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:
May. 11, 2004
Filed:
May. 15, 2001
Applicant:
Inventors:
Kaj Henricson, Helsinki, FI;
Eero Kontturi, Espoo, FI;
Olavi Pikka, Karhula, FI;
Janne Vehmaa, Huutjärvi, FI;
Assignee:
Andritz Oy, Helsinki, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21C 9/02 ;
U.S. Cl.
CPC ...
D21C 9/02 ;
Abstract
The present invention relates to a method of treating chemical pulp in order to optimize the consumption of bleaching chemicals and to improve the quality of the pulp. Especially the invention relates to a method according to which filtrate obtained from a suitable stage of the washing of brown stock preferably cooked by an alkaline cooking method is treated with an oxidizing chemical prior to the oxygen stage following the brown stock washing.
Quick Actions:
Henricson, Kaj. (2004). Method and apparatus for treating pulp (U.S. Patent No. 6733625). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6733625
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile