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. 25, 1987
Filed:
Feb. 01, 1985
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365 15 ;
Abstract
A magnetic bubble memory has the longitudinal direction of a minor loop, i.e. a row of permalloy patterns, on a magnetic film of a (111) crystal plane aligned with the [110] crystal axis of the magnetic film. By aligning the direction of bubble transfer in the minor loop with the [110] crystal axis, the bias magnetic field margin, .DELTA.H.sub.B, is enabled to increase and the strength of the holding magnetic field, H.sub.DC, is enabled to decrease.