Steward Advanced Materials, Inc.

Steward, Inc.

Danny R Smith

Henry Paris

Scott F Smith

James N Kaiser

A method for making ferrite powder may include providing ferrite feed materials in a form of particles having different sizes and irregular shapes, and exposing the ferrite feed materials to a plasma to provide a more spherical shape to irregularly shaped particles to thereby make the ferrite powder. An apparatus for making ferrite powder may include a feeder for ferrite feed materials and a plasma generator for exposing the ferrite feed materials to a plasma.

Method and apparatus for making ferrite material products and products produced thereby

A method for making a radiation absorbing material (RAM) coating may include providing an iron-silicon alloy powder, forming the iron-silicon alloy powder into flakes, and passivating the flakes. The method may further include selecting passivated flakes having a desired size, and combining the selected passivated flakes with a carrier to provide the RAM coating. The coating may be applied to a substrate to impart the radiation absorbing property thereto.

Method for making radiation absorbing material (RAM) and devices including same

A method for preparing the carrier for a developer composition is provided. The method comprises subjecting a ferric oxide and a metal oxide to conditions sufficient to form a ferrite have a spinel structure, mixing the ferrite having a spinel structure with a sintering agent, and sintering in the liquid phase the mixture at temperature conditions of less than about 1375.degree. C. to provide a ferrite carrier devoid of zinc, copper, or nickel in its crystal structure. The ferrite carrier cab be used in a developer composition comprising the ferrite carrier and a toner composition.

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Chattanooga, TN, United States of America

Danny R Smith