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:
Jul. 03, 1990
Filed:
Oct. 03, 1988
Shinji Narishige, Mito, JP;
Masaaki Sano, Hitachi, JP;
Kouichi Nishioka, Hitachi, JP;
Takao Imagawa, Hitachi, JP;
Masanobu Hanazono, Mito, JP;
Tetsuo Kobayashi, Kanagawa, JP;
Toshihiro Yoshida, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A thin film magnetic head is disclosed which includes a substrate, a first magnetic core disposed on the substrate, a second magnetic core forming a magnetic path in conjunction with the first magnetic core, a conductor coil wound in the magnetic path and a gap formed between ends of the first magnetic core and the second magnetic core. At least one of the first magnetic core and the second magnetic core includes a thin film of a cobalt alloy. The cobalt alloy includes 20-70 atomic percent of cobalt, 20-60 atomic percent of nickel, 12-30 atomic percent of iron and 5-32 atomic percent of palladium.