Patents by Inventor Daniel J. Van Wingerden

Daniel J. Van Wingerden 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).

  • Sm-Fe-V magnet alloy and method of making same
    Patent number: 4969961
    Abstract: A magnetically hard compound having the approximate formula SmFe.sub.10 V.sub.2 formed by rapidly quenching a molten mixture of the precursors either with or without subsequent annealing exhibits an intrinsic room temperature coercivity of at least 5 kOe. A mixture of samarium, iron and vanadium is melted and then rapidly quenched by metal spinning to form a fine grained structure with magnetic anisotropy as quenched. Alternatively, the molten material is over-quenched and then annealed to optimize the magnetic properties of the alloy.
    Type: Grant
    Filed: March 3, 1989
    Date of Patent: November 13, 1990
    Assignee: General Motors Corporation
    Inventors: Frederick E. Pinkerton, Daniel J. Van Wingerden