Patents by Inventor Pierre Turillon

Pierre Turillon 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 obtaining a magnetic material of the rare earth/transition metals/boron type in divided form for corrosion-resistant magnets
    Patent number: 5221368
    Abstract: The invention relates to a method of obtaining friable and relatively inert TR Fe B type magnetic materials in divided form which lead to magnets having improved corrosion resistance. This method involves treating the material in an atmosphere containing (or capable of containing) hydrogen under the following conditions of absolute pressure (P) and of temperature (T.degree. C.): if P.ltoreq.Pa, 250<T<550; and if P>Pa, 250+100 log (P/Pa)<T<250+100 log (P/Pa) log base 10, Pa being atmospheric pressure. The invention is used for obtaining sintered TR Fe B magnets having improved corrosion resistance.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: June 22, 1993
    Assignee: Aimants Ugimag
    Inventors: Armand Gabriel, Masato Sagawa, Philippe Tenaud, Pierre Turillon, Fernand Vial