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:
Oct. 21, 1980
Filed:
Apr. 06, 1979
Peter J Silverman, Palo Alto, CA (US);
Donald K Rose, Palo Alto, CA (US);
Intel Magnetics, Inc., Santa Clara, CA (US);
Abstract
A process for thickening the relatively thin bonding pads of a single wall magnetic domain (bubble) device is disclosed. The process is particularly suited for thickening the pads defined by a buried metal layer, such as the conductive layer often disposed between the magnet garnet layer and permalloy layer. Windows are etched through a polyimide scratch protection layer to expose underlying bonding pads. A layer of gold is formed over this protective layer and over the exposed pads. The gold layer is washed away from the protective layer. Since the gold adheres only to the bonding pads, it remains to build up the thickness of these pads.