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:
Sep. 01, 1992
Filed:
Oct. 15, 1990
Applicant:
Inventors:
Takayuki Itakura, Moriguchi, JP;
Takashi Teshima, Ibaraki, JP;
Tomohide Iida, Minamikawachi, JP;
Hirofumi Horio, Sakai, JP;
Assignee:
Mita Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430111 ; 430126 ;
Abstract
The present invention provides a toner composition comprising a toner and a hydrophobic silica composed of a fine powder of silica treated with a compound having a polymethylsilyl group in the molecule.