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. 10, 1991
Filed:
Nov. 10, 1988
Applicant:
Inventors:
Hideo Zama, Katsuta, JP;
Hitoshi Idegami, Ibaraki, JP;
Yosio Manabe, Hitachi, JP;
Kenkichi Inada, Katsuta, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360126 ; 360122 ;
Abstract
Disclosed is a magnetic head formed of a thin metal film in which a metal magnetic film in the form of a chevron is formed on a substrate, and two half cores in each of which the apex portion of the chevron-shaped metal magnetic film is flattened are integrated in such a manner as to face each other with a gap member placed therebetween, the magnetic head comprising a desired track width not more twice thicknesses d.sub.1, d.sub.2 of the metal magnetic film on both sides of the apex portion, and the following formula is met: