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. 12, 1998
Filed:
Oct. 21, 1993
Hiroshi Ohji, Amagasaki, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A multilayered soft magnetic film including a substrate, and a cyclic structure formed on the substrate and comprised of a main magnetic film composed of either Fe or an alloy containing the same as a main component thereof and a base film composed of either Ni-Fe alloy or an alloy containing the same as a main component thereof which are stacked alternately and repeatedly. The main magnetic film is 500 nm thick or thinner per film, while the base film is 20 nm thick or thinner per film. A thickness ratio of the main magnetic film to the base film per film is 1 or larger. The multilayered soft magnetic film exhibits good soft magnetic properties form the very beginning while maintaining a high initial permeability even after subjected to a heat treatment at a high temperature.