Patents by Inventor Robert Tissot

Robert Tissot 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 controlling the remanent induction of a sintered magnet, and the product thus obtained
    Patent number: 5288454
    Abstract: A method for controlling the remanance of a sintered magnet by varying the time when the orienting field is applied during cold compression. The method comprises obtaining powders of an appropriate particle size, compressing the powders in an oriented field, sintering, heat treating, machining and magnetizing to technical saturation. The cold compressing in an orienting field takes place at a precompression rate of more than 15% before the orienting field is applied. The method applies to magnets of all shapes which must have magnetic induction well defined in modulus and in direction, particularly annular magnets for traveling wave tubes.
    Type: Grant
    Filed: January 6, 1993
    Date of Patent: February 22, 1994
    Assignee: Aimants Ugimag S.A.
    Inventors: Jean-Marc Lang, Robert Tissot