Patents by Inventor Roger Nels Dokken

Roger Nels Dokken 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).

  • Use of CO.sub.2 in argon-oxygen refining of molten metal
    Patent number: RE29584
    Abstract: An improved argon-oxygen decarburization process for refining stainless steel comprising injecting a three component gas mixture consisting of oxygen, argon and carbon dioxide into the molten steel during decarburization. .[.The critical upper limit of CO.sub.2 injection into the melt is defined, below which the carbon removal efficiency is improved..]. The preferred flow rate of CO.sub.2 during each of the three principal phases of decarburization is set forth as a function of the flow rate of oxygen and argon, bath temperature and carbon content of the melt.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: March 21, 1978
    Assignee: Union Carbide Corporation
    Inventors: Barrett Henry Heise, Roger Nels Dokken