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. 24, 1978
Filed:
Oct. 07, 1977
Applicant:
Inventors:
Harufumi Senn, Yamato-Kouriyama, JP;
Yoshio Tawara, Shijyonawate, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
148 3157 ; 148101 ;
Abstract
Fine-grained sintered magnetic material having the composition expressed by SmMz where M is essentially cobalt or a combination of cobalt, iron and copper, exhibits a large coercive force critically when the z-value is in the vicinity of 8. As small amount of zinc can be added to the raw material to aid in the sintering of the material.