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. 19, 1982
Filed:
Feb. 19, 1980
Applicant:
Inventors:
Albert Brucato, Seattle, WA (US);
Richard J Brooks, Seattle, WA (US);
Assignee:
The Chemithon Corporation, Seattle, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C / ;
U.S. Cl.
CPC ...
162-5 ; 162 75 ;
Abstract
Waste newsprint is defibered in an aqueous bath to which is added a deinking agent. The resulting slurry or pulp is rinsed, drained and formed into paper sheets. The deinking agent is a C.sub.14 to C.sub.20 alpha olefin sulfonate or a mixture of C.sub.18 alpha olefin sulfonate and a non-ionic detergent, depending upon the conditions of the deinking bath.