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. 07, 1998
Filed:
Apr. 10, 1997
Applicant:
Inventors:
Kazuaki Sukata, Kyoto, JP;
Shun-ichiro Yamanaka, Osaka, JP;
Assignee:
Orient Chemical Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430110 ;
Abstract
Toner for developing electrostatic images that comprises a binder resin, a coloring agent and a calixarene compound as a charge control agent, wherein some of the phenolic OH groups of said calixarene compound are metallized with alkali metal or alkaline earth metal.