Patents by Inventor Georges Giroud

Georges Giroud 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 producing stainless steel
    Patent number: 4141723
    Abstract: Stainless steel is produced in a converter with a tuyere defining a central conduit and a peripheral conduit concentrically surrounding the central conduit, by blowing an oxidizing refining gas through the central conduit into a molten metal bath, the refining gas initially consisting of pure oxygen and being subsequently diluted by gaseous argon, and injecting liquid argon into the converter through the peripheral conduit, to refine the molten metal bath until it has attained a desired level of carbon.
    Type: Grant
    Filed: August 30, 1977
    Date of Patent: February 27, 1979
    Assignee: Institut de Recherches de la Siderurgie Francaise (IRSID)
    Inventors: Guy Denier, Pierre Vayssiere, Georges Giroud, Jean-Claude Grosjean