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:
Apr. 03, 2001
Filed:
Dec. 20, 1996
Alexander P. Payne, Ben Lomond, CA (US);
William C. Cain, San Jose, CA (US);
Michael E. Devillier, San Jose, CA (US);
Harold J. Hamilton, Santa Clara, CA (US);
Robert D. Hempstead, Los Gatos, CA (US);
Darren T. Imai, Los Gatos, CA (US);
Dimitre A. Latev, San Jose, CA (US);
Mark A. Lauer, Pleasanton, CA (US);
David D. Roberts, Santa Cruz, CA (US);
Censtor Corporation, San Jose, CA (US);
Abstract
An information storage system having a ring head in such close proximity to a rigid magnetic storage disk that the magnetic field felt by the media layer or layers of the disk has a larger perpendicular than longitudinal component so that data is stored in a perpendicular mode. Reading of data is accomplished with a magnetoresistive sensor which may be coupled to the magnetically permeable core of the ring head far from the poletips, which may contact the disk. The media preferably has a high perpendicular anisotropy, and may be formed in a plurality of films with crystalline structures traversing the films.