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:
Jun. 06, 1978
Applicant:
Inventors:
Toshihiko Tsuji, Tokyo, JP;
Riyouji Sakai, Tokyo, JP;
Assignee:
Nippon Kinzoku Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
336229 ; 75 / ; 148104 ; 252 6254 ; 252 6255 ; 336233 ;
Abstract
A reactor comprising an annular iron core constituting a closed magnetic path and a conductor wound on the iron core. The iron core is formed of particles of iron or an iron-based magnetic material. Each particle is covered with an insulative oxide film which contains 0.3 to 0.8% of oxygen by weight based on the particle.