Patents by Inventor Etsushi Oda

Etsushi Oda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of making ferrite material powder by spray pyrolysis process and method of producing ferrite magnet
    Patent number: 6630084
    Abstract: A method of making a magnetoplumbite-type ferrite material powder includes the step of preparing the ferrite material powder by spraying a mixed chloride solution, in which a chloride of iron and a chloride of strontium are dissolved, into a heated atmosphere. The solution of the mixed chloride contains 25% through 35% of the chloride of iron and 2.4% through 4.9% of the chloride of strontium.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: October 7, 2003
    Assignee: Sumitomo Special Metals Co., Ltd.
    Inventor: Etsushi Oda