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:
Jan. 08, 2002
Filed:
May. 02, 1995
Applicant:
Inventors:
Assignee:
Kvaerner Pulping Aktiebolag, Karlstad, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C 9/147 ; D21C 9/153 ; D21C 9/16 ; D21C 1/104 ;
U.S. Cl.
CPC ...
D21C 9/147 ; D21C 9/153 ; D21C 9/16 ; D21C 1/104 ;
Abstract
The present invention relates to a process for producing pulp which is cooked under alkaline conditions and which is bleached without using chlorine-containing bleaching chemicals, in which process used cooking chemicals are recovered in a first recovery installation and used bleaching chemicals are recovered in a second recovery installation. The used cooking and bleaching chemicals can be regenerated and reused.
Quick Actions:
Backlund, Åke. (2002). Totally chlorine free bleaching process using recovered filtrate (U.S. Patent No. 6336994). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6336994
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile