Patents by Inventor Ronald J. J. Martis

Ronald J. J. Martis 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).

  • Amorphous metal alloys having enhanced AC magnetic properties at elevated temperatures
    Patent number: 5035755
    Abstract: An amorphous metal alloy which is at least 90% amorphous having enhanced magnetic properties at elevated temperatures and consisting essentially of a composition having the formula Fe.sub.a Si.sub.b B.sub.c wherein "a", "b" and "c" are atomic percentages ranging from about 79.4 to 79.8, 6 to 8 and 12 to 14, respectively, with the proviso that the sum of "a", "b" and "c" equals 100.
    Type: Grant
    Filed: December 11, 1990
    Date of Patent: July 30, 1991
    Assignee: Allied-Signal Inc.
    Inventors: Davidson M. Nathasingh, Ronald J. J. Martis, Amitava Datta
  • Amorphous alloys for electromagnetic devices
    Patent number: 4588452
    Abstract: An iron based, boron, silicon, carbon and chromium containing magnetic alloy having at least 85 percent of its structure in the form of an amorphous metal matrix is annealed at a temperature and for a time sufficient to induce precipitation therein of discrete particles of its constituents and to form an oxide layer on the surface of the matrix. The resulting alloy has decreased high frequency core losses and increased low field permeability; is particularly suited for high frequency applications.
    Type: Grant
    Filed: June 18, 1984
    Date of Patent: May 13, 1986
    Assignee: Allied Corporation
    Inventors: Davidson M. Nathasingh, Amitava Datta, Ronald J. J. Martis, Nicholas J. DeCristofaro
  • Amorphous alloys for electromagnetic devices
    Patent number: 4473413
    Abstract: An iron based, boron, silicon, carbon and chromium containing magnetic alloy having at least 85 percent of its structure in the form of an amorphous metal matrix is annealed at a temperature and for a time sufficient to induce precipitation therein of discrete particles of its constituents and to form an oxide layer on the surface of the matrix. The resulting alloy has decreased high frequency core losses and increased low field permeability; it is particularly suited for high frequency applications.
    Type: Grant
    Filed: March 16, 1983
    Date of Patent: September 25, 1984
    Assignee: Allied Corporation
    Inventors: Davidson M. Nathasingh, Amitava Datta, Ronald J. J. Martis, Nicholas J. DeCristofaro