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:
Jun. 09, 1992
Filed:
Jun. 06, 1988
Applicant:
Inventors:
Benzion Landa, Edmonton, CA;
Yehuda Niv, Rehobot, IL;
Israel Grossinger, Rehobot, IL;
Moshe Levanon, Rehovot, IL;
Yossi Adam, Rehovot, IL;
Assignee:
Spectrum Sciences B.V., Rotterdam, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
355246 ; 430 54 ; 356411 ; 250226 ; 355256 ; 355208 ; 355326 ;
Abstract
A method for maintaining a preselected concentrations of first and second charge directors in a toner composition, where such composition is being subjected to a use in which initial concentrations of the first and second charge directors are being depleted.