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:
Apr. 22, 1997
Filed:
May. 04, 1994
Applicant:
Inventors:
Yumie Watanabe, Tokyo-To, JP;
Yumiko Takahashi, Koshigaya, JP;
Takao Sawa, Yokohama, JP;
Yoshiyuki Yamauchi, Yokohama, JP;
Susumu Matsushita, Yokosuka, JP;
Masami Okamura, Yokohama, JP;
Assignee:
Kabushiki Kaishi Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; H03K / ; H01F / ;
U.S. Cl.
CPC ...
428141 ; 428606 ; 428692 ; 428900 ; 307106 ; 307415 ; 336213 ; 335297 ; 148304 ; 148403 ;
Abstract
A magnetic core is obtained by winding or laminating at least one alloy ribbon and has excellent squareness characteristic and magnetic saturation characteristic in a high frequency region wherein the squareness ratio of the magnetic core is improved by restricting the surface roughness of the alloy ribbon to specific regions.