Patents by Inventor Mathur Raghavan

Mathur Raghavan 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: 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
  • 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
  • Patent number: 4019900
    Abstract: High strength oxidation resistant nickel base alloys are disclosed, said alloys consisting essentially of from 2 to 6% aluminum, 1 to 6% chromium, 0.5 to 4% silicon, 5 to 20% cobalt, 0.03 to 0.30% carbon, 0.005 to 0.25% magnesium, balance nickel. The alloys may optionally include 0.002 to 0.05% boron, 0.002 to 0.05% zirconium, up to 15% iron, up to 1% manganese and up to 1% of an element selected from the group consisting of Rare Earth elements. The alloys exhibit a high resistance to oxidation deterioration and good mechanical properties at elevated temperatures.
    Type: Grant
    Filed: April 1, 1976
    Date of Patent: April 26, 1977
    Assignee: Olin Corporation
    Inventors: Mathur Raghavan, Eugene Shapiro
  • Patent number: 4013459
    Abstract: Improved oxidation resistant nickel base alloys, and processing thereof, consisting essentially of from 2 to 6% aluminum, from 0.5 to 4% silicon, from 0.001 to 0.5% of a material selected from the group consisting of the elements of the lanthanide series of the Periodic Table and mixtures thereof, preferably mischmetal, and the balance essentially nickel.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: March 22, 1977
    Assignee: Olin Corporation
    Inventor: Mathur Raghavan