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. 03, 2003
Filed:
Mar. 29, 2001
Applicant:
Inventors:
Assignee:
Nippon Aerosil Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/113 ;
U.S. Cl.
CPC ...
G03G 9/113 ;
Abstract
The tribo-electro static charge is stabilized by treating the surface of the metallic-oxide fine powders such as a silica powder, using the mixed solution which consists of a specific silane coupling agent containing primary amino group, other silane coupling agent containing amino group and the hydrophobic agent The powder such as silica has the small charge variation with time, and is suitable as the additive of the powder coatings or the electrophotographic toner.