Patents by Inventor Appajosula Srinivasa Rao

Appajosula Srinivasa Rao 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).

  • Electrochemical sensor with nano-wire array
    Patent number: 8057651
    Abstract: An electro-chemical sensor comprises a bismuth nano-wire array. The sensor is used to detect incipient corrosion under paint. It is particularly useful in admiralty and marine applications such as for detecting incipient metal oxidation such as rusting and for monitoring the progress of metal oxidation on ship hulls and tanks. It is also useful in the automobile industry for quantifying surface quality in preparation for painting.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: November 15, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Norris Lindsey, Appajosula Yashodhara Rao, Appajosula Srinivasa Rao
  • Rhenium composite
    Patent number: 7090893
    Abstract: A method of forming a rhenium layer on a substrate, comprising: applying a solid rhenium-containing compound to a substrate; reducing at a temperature above ambient temperature the rhenium-containing compound so that a rhenium layer is formed on the substrate; and optionally, repeating applying additional rhenium-containing compound on at least a section of the rhenium layer, and reducing at a temperature above ambient temperature the additional rhenium-containing compound so that a thicker layer of rhenium is formed.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: August 15, 2006
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Amarnath P. Divecha, Appajosula Srinivasa Rao, William A. Ferrando