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:
Mar. 01, 1994
Filed:
May. 21, 1992
Applicant:
Inventor:
Kathryn A Pearlstine, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430114 ; 430115 ; 430119 ; 430137 ;
Abstract
A negative-working electrostatic liquid developer consists essentially of a nonpolar liquid having Kauri-butanol value less than 30; thermoplastic resin particles having an average particle size by area of less than 10 .mu.m; a salt of an AB diblock copolymer charge director compound as defined; and optionally a colorant and charge adjuvant; and process of making same.
Pearlstine, Kathryn. (1994). Block copolymer amine salts as charge directors for negative (U.S. Patent No. 5290653). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5290653
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile