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:
Oct. 07, 1980
Filed:
Mar. 30, 1979
Applicant:
Inventors:
Assignee:
Dowa Mining Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ;
U.S. Cl.
CPC ...
423594 ; 252 6256 ; 252 626 ; 252 6262 ; 252 6263 ; 252 6264 ;
Abstract
There is disclosed a novel type of spherical grain-ferrite powder as well as a process and apparatus for the production thereof. A slurry of ferrite-forming powdered raw materials in alcohol is sprayed under applied pressure through a spray nozzle into a high temperature atmosphere of between 700.degree.-1500.degree. C. to allow the combustion of sprayed alcohol therein thereby instantaneously producing spherical grain-ferrite powder.
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Watanabe, Yasuo. (1980). Process and apparatus for production of spherical grain ferrite powder (U.S. Patent No. 4226843). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4226843
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile