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. 06, 1977
Filed:
Nov. 01, 1976
David Malcolm Hannon, Palo Alto, CA (US);
Hung Liang Hu, Sunnyvale, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A device adapted for biasing bubble domains in a low externally applied magnetic bias field. This device is suitable for use when isolated bubbles or a column of bubbles are translated to or from a bubble lattice. The device has a pair of parallel channels, each containing a stripe domain therein. Positioned between the pair of channels is a channel for the translation of isolated bubbles. Positioned in juxtaposition with the bubble containing channel and the pair of stripe containing channels are a pair of parallel conductors. The passage of current through one conductor in one direction and a current through the other conductor in the opposite direction together with the presence of the stripe domains in the two channels provide a biasing field around the channel containing the bubbles which permits the isolated bubble operating margin to overlap the lattice operating margin.