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:
Feb. 02, 1993
Filed:
Nov. 19, 1991
Applicant:
Inventor:
Panu Tikka, Kantvik, FI;
Assignee:
Sunds Defibrator Rauma Oy, , FI;
Primary Examiner:
Int. Cl.
CPC ...
D21C / ; D21C / ;
U.S. Cl.
CPC ...
162 19 ; 162 37 ; 162 40 ; 162 41 ;
Abstract
Processes for prepariing kraft pulp are disclosed. The processes include pretreating cellulosic material or chips with spent cooking liquor at the temperature of about 20.degree. to 100.degree. C., followed by heating the impregnated chips at the temperature of from about 120.degree. to 180.degree. C., followed by digestion of the lignin with white liquor, which is facilitated by using this pretreatment process.
Quick Actions:
Tikka, Panu. (1993). Process for preparing kraft pulp using black liquor pretreatment reaction (U.S. Patent No. 5183535). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5183535
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile