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:
Sep. 06, 1988
Filed:
Dec. 03, 1985
Toshihiro Sato, Kokubunji, JP;
Takashi Toyooka, Sayama, JP;
Teruaki Takeuchi, Kokubunji, JP;
Masatoshi Takeshita, Hachioji, JP;
Naoki Kodama, Tachikawa, JP;
Tadashi Ikeda, Tsukui, JP;
Ryo Suzuki, Hachioji, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a magnetic bubble memory device employing ion-implanted tracks as minor loops for data storage, there is proposed a magnetic bubble memory element employing a minor loop having a folded structure and a turn composed of three tips formed convexly toward an ion-implanted area and two cusps as an inside turn for accomplishing the folding with a center as the ion-implanted area. In this inside turn, the line connecting between the two cusps of the turn includes a gradient in the range of 90 degrees to 120 degrees in relation to the ion-implanted straight line tracks.