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:
Jun. 25, 1996
Filed:
Dec. 02, 1994
Satoshi Waga, Sendai, JP;
Mitsuo Bitoh, Sendai, JP;
Kazunari Takida, Nagaoka, JP;
Kenji Shimizu, Miyagi-ken, JP;
Kiyoshi Sasai, Miyagi-ken, JP;
Yoshihiro Sudoh, Miyagi-ken, JP;
Yoshinobu Kakihara, Sendai, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A thin film device comprising a substrate which is magnetic and has insulation property at least on the surface, coils formed spirally in a planar configuration on the substrate, a first interlayer insulation film formed to a portion excepting for the terminal portion of the coils and a magnetic material connection portion of the substrate, a magnetic film and a second interlayer insulation film formed successively on the first interlayer insulation film excepting for the terminal portions, and bump electrodes formed in connection with the terminal portions in which a crystallite material having a composition: Fe.sub.78 Ta.sub.10 C.sub.12 is used as the magnetic film. The thin film device can be formed an a reduced size and having a large inductance value. When the device is used as a noise filter, a cut-off frequency range can be lowered.