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.

Date of Patent:
Feb. 06, 1990

Filed:

Oct. 19, 1987
Applicant:
Inventors:

Hidekiyo Tachibana, Kanagawa, JP;

Akihiko Noda, Kanagawa, JP;

Kazuo Terao, Kanagawa, JP;

Toshio Honjou, Chiba, JP;

Yukio Seki, Chiba, JP;

Hiroshi Endo, Chiba, JP;

Toshio Yokobari, Chiba, JP;

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
4301066 ; 430108 ;
Abstract

A carrier of developers composed of a composition represented by (MO).sub.X (Fe.sub.2 O.sub.3) having bulk density of 1.8-3.4 g/Cm.sup.3 and magnetization of 10-30 emu/g in a magnetic field of 450-1000 O (oersted), where M is at least one metal selected from the group comprising lithium, manganese, nickel, zinc, cadmium, copper, cobalt, and magnesium.


Find Patent Forward Citations

Tachibana, Hidekiyo. (1990). Magnetic carrier of developer for electrophotographic copying machines (U.S. Patent No. 4898801). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4898801

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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