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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.:

US 4745578 B1

PDFFull Text
Date of Patent:
May. 17, 1988

Filed:

Aug. 21, 1986

Magnetic bubble memory device

Applicant:
Inventors:

Teruaki Takeuchi, Kokubunji, JP;

Naoki Kodama, Tachikawa, JP;

Masatoshi Takeshita, Hachioji, JP;

Takashi Toyooka, Sayama, JP;

Ryo Suzuki, Hachioji, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:

Antonelli, Terry & Wands

Primary Examiner:

James W Moffitt

Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365 36 ;
Abstract

A magnetic bubble memory device comprises contiguous-disk ion-implanted magnetic bubble propagation tracks formed by implanting selectively ions in a magnetic layer which can hold magnetic bubbles. At least one of the disks which form the ion-implanted bubble tracks and each of which may have a circular or square shape, is configured to include a combination of arcs of circles having different curvatures or a combination of sides of squares having different sizes.

Find Patent Forward Citations

Takeuchi, Teruaki. (1988). Magnetic bubble memory device (U.S. Patent No. 4745578). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4745578

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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