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:
May. 29, 2012
Filed:
Dec. 06, 2007
Applicants:
Zhou YE, Lerberget, SE;
Björn Skårman, Höganäs, SE;
Inventors:
Zhou Ye, Lerberget, SE;
Björn Skårman, Höganäs, SE;
Assignee:
Hoganas AB, Hoganas, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/147 (2006.01);
U.S. Cl.
CPC ...
Abstract
A powder magnetic core is provided for operating at high frequencies that is obtained by pressure forming an iron-based magnetic powder covered with an insulation film, which has a specific resistance more than 1000, preferably more than 2000, and most preferably more than 3000 μΩm, and a saturation magnetic flux density B above 1.5, preferably above 1.7, and most preferably above 1.9 (T). A method for the preparation of such cores as well as a powder which is suitable for the preparation also are provided.