Patents by Inventor Francis S. Snyder

Francis S. Snyder 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 for producing permanent magnet alloy particles for use in producing bonded permanent magnets
    Patent number: 4994109
    Abstract: A method for producing permanent magnet alloy particles suitable for use in producing bonded permanent magnets. A melt or molten mass of a permanent magnet alloy having at least one rare earth element, at least one transition element, preferably iron, and boron is produced. The melt is inert gas atomized to form spherical particles within the size range of 1 to 1000 microns. The particles are heat treated in a nonoxidizing atmosphere for a time at temperature to significantly increase the intrinsic coercivity of the particles without sintering the particles to substantially full density. Thereafter, the particles are separated to produce a discrete particle mass. The particles during heat treatment may be maintained in motion to prevent sintering thereof.
    Type: Grant
    Filed: May 5, 1989
    Date of Patent: February 19, 1991
    Assignee: Crucible Materials Corporation
    Inventors: Carol J. Willman, Edward J. Dulis, Francis S. Snyder
  • Samarium-cobalt magnet alloy containing praseodymium and neodymium
    Patent number: 4563330
    Abstract: A magnet alloy which has a combination of high energy product and remanence, which magnet alloy consists essentially of, in weight percent, 10 to 30 samarium, 10 to 20 of an additional rare earth element selected from the group consisting of praseodymium and neodymium and the balance cobalt; iron and tin may also be added to the alloy.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: January 7, 1986
    Assignee: Crucible Materials Corporation
    Inventors: Kalatur S. V. L. Narasimhan, Francis S. Snyder