Patents by Inventor Duncan G. Block

Duncan G. Block 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).

  • Electrical conductivity of aluminum alloys through the addition of yttrium
    Patent number: 4213800
    Abstract: The present invention utilizes the unique addition of yttrium to aluminum base alloys to either enhance the conductivity of such alloys when compared to commercial conductor grade material or provide equivalent conductivity when utilizing grades of aluminum containing higher normal impurity levels. Various processing procedures can be utilized for this material, depending upon the desired final properties.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: July 22, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventors: William E. Mayo, Mathur Raghavan, Stanley Shapiro, Ronald G. Hardy, Duncan G. Block
  • Improving the electrical conductivity of aluminum alloys through the addition of mischmetal
    Patent number: 4213799
    Abstract: The present invention utilizes the unique addition of mischmetal to aluminum base alloys to either enhance the conductivity of such alloys when compared to commercial conductor grade material or provide equivalent conductivity when utilizing grades of aluminum containing higher normal impurity levels. Various processing procedures can be utilized for this material, depending upon the desired final properties.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: July 22, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventors: Mathur Raghavan, Stanley Shapiro, Ronald G. Hardy, Duncan G. Block