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. 30, 1980
Filed:
Feb. 05, 1979
Roger D Bassett, Westminister, CO (US);
Gerald A Daughenbaugh, Tucson, AZ (US);
Davis S Fields, Jr, Tucson, AZ (US);
Wayne McCormick, Arvada, CO (US);
Rhodes W Polleys, Tucson, AZ (US);
Ralph D Silkensen, Tucson, AZ (US);
Gerald Steving, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An MR head is disclosed in which the MR element is deposited onto a sapphire substrate with a particular crystallographic orientation and a sapphire closure piece also having a particular crystallographic orientation is used. The substrate has the MR element deposited onto either the {0001} or the {1120} plane with the {1100} plane being oriented as the wear surface. The closure piece has either the {1120} or the {0001} plane facing the MR material and the {1100} plane oriented as the wear surface.