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US 6,372,338 B1Granted
Spherical magnetic particles for magnetic recording media
AssigneeEastman Kodak Company
InventorsFrederick J. Jeffers, Bradford D. West, Robert O. James, Frederick R. Chamberlain, IV, Neil Smith, Ronald M. Wexler
Life of this patent
Estimating the term…
Abstract
A particulate magnetic recording media wherein the magnetic particles are substantially spherical. The spherical particle shape makes possible a media which is magnetically isotropic, well dispersed and low in noise, and free of magnetically inferior broken particles.
Claims20
A magnetically isotropic magnetic recording media consisting of one of barium ferrite or strontium ferrite particles being substantially spherical in shape and having an intrinsic coercivity of more than 1000 Oe.
Dependencies are inferred from the claim text.