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. 31, 1978
Filed:
Dec. 20, 1976
Applicant:
Inventors:
George Brana, Bridgeport, CT (US);
Bheema Rao Vijayendran, Berkley Heights, NJ (US);
Assignee:
Pitney-Bowes, Inc., Stamford, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
428403 ; 96 / ; 252 / ; 260 / ; 260 4214 ; 252 6253 ; 252 6254 ; 427215 ; 427216 ; 427221 ; 4273 / ; 427 18 ; 428407 ;
Abstract
Carrier particles of development powders are treated with a sodium salt of polystyrene sulfonic acid. As a result of the treatment, the triboelectric properties of the carrier particles are better controlled.