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:
Aug. 08, 1989
Filed:
Aug. 05, 1988
Bijay S Saha, Rochester, NY (US);
Robert E Zeman, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Disclosed is an interdispersed two-phase ferrite composite which comprises about 0.1 mole to about 1.0 mole of a spinel phase having the general formula MFe.sub.2 O.sub.4 where M is at least one element that forms a spinel ferrite, to about 2.5 moles of a magnetoplumbite phase having the general formula R.sub.x P.sub.1-x Fe.sub.12 O.sub.19 where R is selected from rare earth elements, P is selected from the group consisting of strontium, barium, calcium, lead, and mixtures thereof, and x has a value of from about 0.1 to about 0.4. Also disclosed is a carrier formed from magnetized and polymerically coated particles of the composite, a developer formed from a carrier and a toner, and a magnetic brush formed from a multiplicity of juxtaposed magnetically aligned hairs formed of the carrier.