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:
Sep. 19, 1989
Filed:
Mar. 02, 1988
Ken Takahashi, Suita, JP;
hiroshi Yohda, Hirakata, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A magnetic head having a recording capacity for sufficiently deriving performance of a high coercive magnetic tape and capable of recording and reproducing signals of very high frequencies at high efficiency. The magnetic head of the present invention includes ferromagnetic thin films and insulative thin films alternately laminated one upon another to form a multi-layered film magnetic core which constitutes part or all of a magnetic path, with the ferromagnetic thin films being so arranged that the directions of their anisotropy are different from each other, and thus, Snoek's limit, due to ferromagnetic resonance, is broken through, thus, making it possible to record and reproduce signals in an efficient manner up to high frequency band regions.