Patents by Inventor Vaidyanathan Nagarajan

Vaidyanathan Nagarajan 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 metal alloys having inherent high temperature oxidation protection
    Patent number: 4762557
    Abstract: A high temperature, oxidation resistant alloy useful in high temperature, oxidizing environments such as those encountered in gas turbines, advanced jet engines, high temperature furnaces and glass melting and processing equipment, among others.The alloy is characterized by selecting a refractory alloy from the group consisting of molybdenum, tungsten, niobium and tantalum having dispersed therein a second phase additive of titanium nitride and a third phase additive of aluminum and titanium. Alternatively, the refractory metals may be molybdenum or tungsten and the second phase additive and third phase additive may be silicon nitride and silicon, or chromium nitride and chromium respectively.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: August 9, 1988
    Assignee: Battelle Memorial Institute
    Inventors: Vaidyanathan Nagarajan, Ian G. Wright