Patents by Inventor Raimo Eriksson

Raimo Eriksson 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 and a device for adding solid, powdered or grained material to melted metal
    Patent number: 4109898
    Abstract: A method and a device for adding solid, powdered or grained material to melted metal includes the steps of and apparatus for inserting a tubular member below the surface of melted metal, blocking the rise of metal into the tube by means of gas pressure, introducing additive material into the tubular member and rotating the tubular member to sling additive material from the tubular member into the melted metal.
    Type: Grant
    Filed: May 20, 1976
    Date of Patent: August 29, 1978
    Inventors: Jaakko Lautjarvi, Raimo Eriksson