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:
May. 05, 1987
Filed:
Dec. 26, 1985
Applicant:
Inventors:
Kazuyoshi Oka, Gunma, JP;
Mitsuhiro Katayama, Gunma, JP;
Toshihiko Kohno, Gunma, JP;
Ulf Engstrom, Hoganas, SE;
Svenn-Erik Larssen, Hoganas, SE;
Assignees:
Kanto Denka Kogyo Co., Ltd., Tokyo, JP;
Hoganas AB, Hoganas, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; C04B / ;
U.S. Cl.
CPC ...
430108 ; 252 6256 ;
Abstract
A noval carrier powder for electrophotographic developers is provided. The carrier powder comprises spherical magnetite particles having a wustite (FeO) content of less than 10% by weight, a particle diameter of 30-200 .mu.m and a surface porosity of less than 20%.
Oka, Kazuyoshi. (1987). Carrier for use in electrophotographic developers (U.S. Patent No. 4663262). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4663262
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile