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:
Mar. 01, 1988
Filed:
Feb. 20, 1985
Masataka Koyama, Yokohama, JP;
Abstract
A thin film vertical magnetization transducer head comprises an auxiliary magnetic pole of larger thickness and a main magnetic pole of smaller thickness having a pole face opposed to and spaced from the pole face of the auxiliary pole to define an air gap therebetween and to form a thin-film magnetic core with the auxiliary magnetic pole. A thin-film nonmagnetic structure supports the thin-film magnetic core so that the main pole is substantially centered with respect to the thickness of the auxiliary pole. The nonmagnetic structure is formed with a passage extending to the air gap to allow the magnetic recording medium to pass through the air gap in the direction of the thickness of the core. A coil structure is provided insulatively surrounding the auxiliary magnetic pole for generating a magnetic field across the pole faces.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile