Patents by Inventor Lars G. Berg

Lars G. Berg 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).

  • Refractory lining and process for its manufacture
    Patent number: 4617280
    Abstract: Refractory lining for e.g. casting boxes comprising a refractory matrix and precipitated silica, the silica being precipitated in situ to form a structure, imparting to the material a volume weight of from about 0.8 to about 1.2 g/cm.sup.3, the material being substantially free from carbon, hydrogen and available oxygen; process for the manufacture of such refractory lining.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: October 14, 1986
    Assignee: Hoganas AB
    Inventors: Paul L. Ivarsson, Ingvar G. A. Blom, Lars G. Berg