Patents by Inventor Borge Lunn

Borge Lunn 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).

  • Patent number: 3963526
    Abstract: A method in which to a brass containing 61-66% of copper there is added 0.02% of an alloying element such as arsenic, antimony or phosphorus and up to 4% of lead and in the case of chill casting and pressure die casting alloys 0.05-0.8% of aluminum, the remainder being zinc and usual impurities from the raw materials used, and in which the alloy after chill casting, pressure die-casting or sand casting, after extrusion or, where applicable, after hot pressing of parts cut from extruded rods, is heated to a temperature in the interval between 450 and 600.degree. Celcius for a period so selected that the .beta.-crystals are broken up, thus avoiding the occurence of a coherent structure of .beta.-crystals through the brass.
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: June 15, 1976
    Assignee: Aktieselskabet Nordiske Kabel-OG Traadfabriker
    Inventor: Borge Lunn