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:
Mar. 25, 1986
Filed:
Jun. 16, 1983
Applicant:
Inventors:
Ryo Suzuki, Kodaira, JP;
Yutaka Sugita, Tokorozawa, JP;
Teruaki Takeuchi, Kokubunji, JP;
Naoki Kodama, Hachioji, JP;
Masatoshi Takeshita, Hachioji, JP;
Hiroshi Umezaki, Koganei, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365 36 ; 365 39 ;
Abstract
A magnetic bubble memory device is disclosed which is equipped with a minor loop of a magnetic bubble propagation track formed by ion implantation and a major loop or major line of a magnetic bubble propagation track consisting of a soft magnetic film and in which the thickness of an insulating film at at least the junction between the minor loop and the major loop or major line is less than the thickness of insulating film at the major line or major loop.