Patents by Inventor John Stergiou

John Stergiou 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).

  • Testing condition of internal combustion engines by sampled detection of gas leakage
    Patent number: 6612155
    Abstract: Operation of an internal combustion engine is terminated with the intake and exhaust valves maintained closed. A pressurized testing gas is then injected into the combustion chamber so that vacuum at different locations on the engine may be sampled to determine location of the highest gas leakage for identifying possible engine defects corresponding thereto.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: September 2, 2003
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: John Stergiou