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. 10, 1988
Filed:
Jan. 28, 1986
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360126 ;
Abstract
A thin-film magnetic head is disclosed wherein a first core portion includes an insulative island of inorganic material. A first coil section is formed in the island so that it presents a flat common surface with the island and substrate. A gap-forming insulating layer is on the first coil section and the first core portion. A second core portion is on the gap-forming layer, forming a magnetic circuit with the first core portion. A second coil section is connected to the first coil section to form a coil therewith. In a modification, the head comprises a nonmagnetic substrate in which a coil section is formed to present a flat common surface. Metallic ferromagnetic material is used to form core portions on the coil section.