Patents by Inventor Yves J. Respen

Yves J. Respen 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).

  • Process for improving the quality of steel sections
    Patent number: 4203783
    Abstract: The elastic limit and breaking load of steel sections are improved by a process of surface quenching and self-tempering comprising a cooling stage followed by rapid cooling which is interrupted to allow the quenched surface layer of the section to be tempered by heat from non-quenched inner portions of the section. The rapid cooling is succeeded by a slow cooling.
    Type: Grant
    Filed: September 18, 1978
    Date of Patent: May 20, 1980
    Assignee: Centre de Recherches Metallurgiques
    Inventors: Marios Economopoulos, Yves J. Respen
  • Apparatus for improving the quality of steel sections
    Patent number: 4161800
    Abstract: At the outlet of the finishing stand of a rolling mill, a cooling apparatus is arranged to surface quench only the outer layer of the flat face of a steel section by a cooling fluid. The cooling conditions are adjusted so that, at the outlet of the cooling zone, the unquenched parts of the section are at a temperature still sufficiently high to temper the quenched face, and so that the austenite is transformed into ferrite and carbides in the unquenched parts of the section.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: July 24, 1979
    Assignee: Centre de Recherches Metallurgiques-Centrum voor Research in de Metallurgie
    Inventors: Mario Economopoulos, Yves J. Respen, Stephane H. Wilmotte