Patents by Inventor Erling Myrbostad

Erling Myrbostad 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).

  • Metal melt treatment equipment
    Patent number: 6488743
    Abstract: Equipment for the treatment of a liquid such as a metal melt has one or more rotors (5) for the supply of gas and/or particulate material to the liquid in a reaction chamber (1). The reaction chamber (1) is closed and has an inlet (3) and an outlet (13) and is designed to be placed under a vacuum. The outlet (13) communicates with another chamber or outlet passage (2). The equipment may have several reaction chambers (1, 2) arranged in series. The first reaction chamber (1) then communicates with the second reaction chamber (2), the second reaction chamber with a third, etc. via an opening (16).
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: December 3, 2002
    Assignee: Norsk Hydro ASA
    Inventors: Karl Venås, Pål Christian Skaret, Per Gunnar Strand, Erling Myrbostad, Idar Steen
  • Method for grain refining of metals
    Patent number: 5160533
    Abstract: A method for grain refining of light metals is based on formation in situ of a grain refining agent. By means of an electric arc provided over the surface of a melted pool of the metal, a supplied gas, e.g. nitrogen, reacts with the metal to form the agent. The method can be carried out both batchwise or in a continuous process.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: November 3, 1992
    Assignee: Norsk Hydro a.s.
    Inventors: Erling Myrbostad, Karl Venas