Patents by Inventor Runmeng Song

Runmeng Song 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 making safe a heat treatment enclosure operating under a controlled atmosphere
    Patent number: 6547898
    Abstract: Method of making safe a heat treatment enclosure operating under a gas atmosphere, the said enclosure comprising a cooling chamber for rapidly cooling a metal strip running from an upstream chamber to a downstream chamber by means of a plurality of guide rollers, wherein said rapid cooling chamber is filled with a controlled atmosphere with a high hydrogen content and said strip is confined within said rapid cooling chamber by means of at least one pressure-balancing duct and of a plurality of gas locks placed between the various chambers, the pressures of the gas atmospheres between the chambers being balanced by means of ducts controlling the flow rates of the gas flowing through the said gas locks.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: April 15, 2003
    Inventors: François Mignard, Runmeng Song, Stéphane Mehrain
  • Method of making safe a heat treatment enclosure operating under a controlled atmosphere
    Publication number: 20010045024
    Abstract: Method of making safe a heat treatment enclosure operating under a gas atmosphere, the said enclosure comprising a cooling chamber for rapidly cooling a metal strip running from an upstream chamber to a downstream chamber by means of a plurality of guide rollers, wherein said rapid cooling chamber is filled with a controlled atmosphere with a high hydrogen content and said strip is confined within said rapid cooling chamber by means of at least one pressure-balancing duct and of a plurality of gas locks placed between the various chambers, the pressures of the gas atmospheres between the chambers being balanced by means of ducts controlling the flow rates of the gas flowing through the said gas locks.
    Type: Application
    Filed: May 15, 2001
    Publication date: November 29, 2001
    Applicant: Stein Heurtey
    Inventors: Francois Mignard, Runmeng Song, Stephane Mehrain