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. 11, 1979
Filed:
Jun. 14, 1976
Applicant:
Inventor:
Donald K Rose, Palo Alto, CA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365 19 ; 365 39 ; 427127 ;
Abstract
A magnetic bubble circuit and process for the manufacture of same is disclosed in which a pattern of permalloy elements is overlaid on a substantially planar surface contiguous with the top surface of an underlying pattern of conducting elements. This structure is fabricated by including a metal or metal alloy film on the substrate and selectively anodizing the film to produce conducting and nonconducting regions having coplanar surfaces.