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:
Apr. 06, 1993
Filed:
Apr. 25, 1991
Applicant:
Inventors:
Sandra K Richmann, Jacksonville Beach, FL (US);
Mary B Letscher, Jacksonville, FL (US);
Assignee:
Betz PaperChem, Inc., Jacksonville, FL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D21C / ;
U.S. Cl.
CPC ...
162-5 ; 162-8 ;
Abstract
A method for deinking dry toner electrostatic printed wastepaper is disclosed. The method includes administering a sufficient amount of an ethoxylated surfactant, propoxylated surfactant, esterified surfactant or alkanolamide surfactant having an HLB value of less than 10.0 to a sample of electrostatic printed wastepaper for which treatment is desired.