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. 17, 1994
Filed:
Dec. 10, 1991
Keiji Ohkubo, Kawasaki, JP;
Hisashi Yamazaki, Kawasaki, JP;
Kiyoto Yamaguchi, Kawasaki, JP;
Yoshiharu Kashiwakura, Kawasaki, JP;
Fuji Electric Co., Ltd., Kawasaki, JP;
Abstract
A thin film magnetic head includes a magnetic core composed of upper and lower magnetic pole films spaced apart to define a read-write gap and a coil disposed between the upper and lower magnetic pole films in an area outside of the gap. The upper and lower magnetic pole films each comprise a thin-film laminate having alternating magnetic and non-magnetic thin films. The magnetic thin film includes an amorphous Co alloy having a soft magnetic property and a thickness within a range of 0.1 .mu.m to 0.5 .mu.m and the non-magnetic thin-film includes a non-magnetic metal or an insulating nitride.