Patents by Inventor James R. Maines

James R. Maines 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).

  • Anisotropic neodymium-iron-boron powder with high coercivity
    Patent number: 4842656
    Abstract: Magnetically anisotropic powder having high coercivity and containing the magnetic phase Nd.sub.2 Fe.sub.14 B is produced by melt spinning a composition of these elements to form amorphous or extremely finely crystalline particles which are hot worked to produce grains containing the above phase and having dimensions in the range of about 20 to 500 nanometers. When the hot worked body is comminuted to powder, the resultant particles are magnetically anisotropic and have appreciable coercivity at room temperature.
    Type: Grant
    Filed: June 12, 1987
    Date of Patent: June 27, 1989
    Assignee: General Motors Corporation
    Inventors: James R. Maines, David Arnold