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:
Dec. 10, 1985
Filed:
Sep. 04, 1984
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360126 ;
Abstract
In a thin film magnetic head in which a lower magnetic layer is formed on a non-magnetic substrate through a non-magnetic layer, and a conductive layer constituting a signal winding and an upper magnetic layer are formed on the lower magnetic layer, the lower magnetic layer is formed within a recess formed in the non-magnetic layer. The recess may pass through the magnetic layer. The lower magnetic layer formed within the recess in the non-magnetic layer can considerably reduce raised portions associated with respective upper layers so that the thin film magnetic head can be improved in magnetic efficienty and yield rate during manufacture.