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:
Aug. 15, 1989
Filed:
Aug. 26, 1988
Simens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
Method for manufacturing terminal contacts for thin-film magnetic heads. The method of manufacturing reinforced terminal contacts for thin-film magnetic heads provides a photolithographic process sequence that allows the technical requirements to be kept as low as possible and that reduces the gold consumption to a minimum. To that end, a copper layer for contact reinforcement fashioned as a tower is electrodeposited in contact windows formed by a photoresistive layer, which is electrodeposited onto an electrically conductive permalloy layer of a substrate before this is completely structured and has been provided with a protective aluminum oxide layer. A gold film required for the attachment of a bonding wire is finally deposited either directly preceding the protection or following the application of the aluminum oxide on the copper layer.