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. 12, 1990
Filed:
Jun. 08, 1987
Applicant:
Inventors:
Hideyo Nishikawa, Wakayama, JP;
Shingo Tanaka, Wakayama, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430109 ; 528128 ;
Abstract
An electrophotographic developer, such as a toner binder and a coating on a carrier, comprises a polyester having an acid value of 5 KOH mg/g or less and a hydroxyl value of 60 KOH mg/g or less, having a linear structure without crosslinking or a crosslinked structure provided by a monomer having three or more reactive groups. A toner having the polyester as a binder is effectively charged positively or negatively.
Nishikawa, Hideyo. (1990). Electrophotographic developer comprising polyester resin of specified (U.S. Patent No. 4933252). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4933252
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile