Patents by Inventor Steven Roy Jeffrey

Steven Roy Jeffrey 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 the fabrication of multipole magnets
    Patent number: 5682670
    Abstract: A method of forming a multipole magnet wherein two backing sheets of paper or film material are screen or stencil printed with an ink containing magnetic particles and a carrier material to provide respective complementary patterned areas thereon, the patterned areas of ink are cured or dried, the respective ink patterns are magnetized using a magnetic field perpendicular to a plane of the backing sheets, and the sheets are combined into a laminate wherein the patterned areas are located between the two sheets.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: November 4, 1997
    Assignee: Magnet Applications Limited
    Inventors: James Fraser Bell, Steven Roy Jeffrey, John Stewart Campbell, Lyn Holt