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:
Aug. 16, 1977
Filed:
Nov. 18, 1975
Applicant:
Inventors:
Seiji Matsumoto, Sakai, JA;
Kiyoshi Fukai, Sakai, JA;
Assignee:
Sakai Chemical Industry Co., Ltd., Sakai, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ; C04B / ;
U.S. Cl.
CPC ...
252 6254 ; 252 6263 ;
Abstract
Single crystalline ferrite particles are obtained by the thermal reaction of ferric oxyhydroxide, ferric hydroxide, porous ferric oxide made therefrom or ferric oxide having a particle size less than 0.8.mu. with a strontium or barium compound such as the oxide hydroxide, the carbonate or the carboxylate in the presence of a small amount of a metal chloride flux such as strontium chloride or barium chloride. The resulting particles have a well-defined, hexagonal plate configuration and are particularly adapted for the production of anisotropic magnets.